What would you like to merge?

Subaru

Auto to Manual Conversion

Auto to manual conversion

Auto to Manual Conversion Service

Are you ready to take back the driving experience and enjoy the car as it was meant to be driven but a bit overwhelmed on what it takes to do the conversion from a wiring standpoint? Great news! We offer a service to convert your bulkhead harness from automatic to manual for a fraction of the cost of a new bulkhead harness from the dealer. 

Why do I have to modify the harness? Unfortunately, there is no way to make an adapter because the powertrain harness is integrated into the body harness. This means we must surgically remove all of the inputs from the automatic transmission computer and then rework the harness to accept the new manual transmission inputs and ECU. Modifying the harness (instead of buying a manual replacement) is a great way to guarantee that it will be plug and play for your vehicle while maintaining your factory or aftermarket accessories. 

How much is it to convert my harness from auto to manual? Our service is $599 plus return shipping and comes with everything needed. This is a fraction of the price of a new factory harness which can get to over $1200 dollars. We also have DIY options for the wiring changes needed that can be found here. 

How do I get my harness merged? Just fill out the sheet below with all your information and an iWire representative will contact you within 24 - 48 hrs. Once the details are sorted out, you’ll remove the bulkhead harness from your vehicle and send it to us along with a copy of the invoice so we can identify the harness once it arrives here.

Eligible vehicles for the Auto to Manual conversion:
1993-2007 Impreza (includes WRX) models
1995-2004 Legacy models
1998-2208 Forester models (except VDC equipped models)
2002-2006 Baja models 

*Note because 2008 and new vehicles are CANbus we do not offer a service more info can be found here

All of our conversions come with a limited lifetime warranty so that you can enjoy your driving in confidence! See here for more details.

Interested in doing it yourself, click here!

Subaru Merge Services

"Subaru Made it Bolt Up, We Make it Plug in."

Thank you for your interest in our wiring services! Our custom harness merges combine the power and features of your new engine and ECU with the factory amenities of your chassis. We strive to make a harness that is high quality and reliable so you can enjoy driving the car and not worry about electrical gremlins. Our harnesses are quality checked before being shipped and are covered by our “Lifetime Warranty”.

Not sure how the merge works? Take a look a video below for a behind the scenes on our process!

To learn more information like cost, what to send in, and turn around times, please select the engine and chassis being used for your project.

Not sure which engine you have? Watch the iWire Guide Video by clicking here


If you are looking for information on the older generation non AVCS engines please take a look at this POST

What is AVCS?

There are several ways that engineers can improve the performance and efficiency of engines. Camshafts, which determine when intake and exhaust valves open, are typically best suited to certain engine speeds and load conditions. In some cases, it would be better for a valve to open earlier (advance) or later (retard) than the camshaft would normally dictate.

Subaru engineers created a system that allows the camshaft to advance and retard its timing so the valves can be made to open and close at the optimal time for different situations. This system is known as "Active Valve Control System" or AVCS. You can read more about this system and its operation here.

 

What does this mean for you? If you live in the US and have a 2006+ WRX, a 2004+ Forester XT, 2005+ Legacy GT, or a 2004+ STI, your car's engine already has AVCS. The USDM 2002-2005 WRX and the GC-generation JDM turbo engines did not come with AVCS.

If you have a USDM 2002-2005 WRX and wish to replace the engine with a 2001-2005 JDM EJ205 or EJ207, you will find that these JDM engines came with AVCS. It is possible to use these engines in place of a USDM EJ205 since they are "plug and play" and will run with no modification necessary.

However, they will not perform to their full potential unless the necessary wiring for AVCS is added and the engine control computer is changed for an AVCS-compatible unit. To maximize engine performance and efficiency iWire recommends installing an iWire AVCS Wiring Kit whenever an AVCS-equipped engine is installed in a USDM 2002-2005 WRX. This wiring, coupled with a compatible ECU and a proper tune, will allow the engine to perform optimally in your Subaru.

 

If you are doing/have done an engine swap with an USDM 2002-2005 WRX into another chassis (like a 2.5RS), the same rules apply. Any vehicle that is wired for a USDM EJ205 can use the 2001-2005 JDM EJ205 and EJ207 longblock, but will require the addition of AVCS wiring and an AVCS-compatible ECU.

 

What about single vs dual AVCS? Single AVCS changes the valve timing on the intake camshafts only. Dual AVCS changes the valve timing on both the intake and exhaust camshafts. Dual AVCS was introduced on newer engines than are covered in this article, but the principle is the same. Dual AVCS engines are not direct replacements for the USDM EJ205 for several reasons which we will talk about in a future blog post. Only the 2001-2005 JDM EJ205 and EJ207 are drop-in replacements for the USDM EJ205.

 

How do I know if the JDM engine I purchased has AVCS? An easy way to tell is to look at the timing covers. AVCS-equipped engines have a bulge in the timing cover on the cylinder 1 and 3 head.

 

 

 

 

My engine was labeled compatible with 2002-2005 USDM WRX. Which engine did I buy?

Good question. Importers are sometimes not up to speed about the differences in Subaru engines. It shouldn't come as a surprise that Craigslist ads and eBay listings sometimes contain inaccuracies. The engines you will typically see listed as "2002-2005 USDM WRX compatible" are as follows.

 

1999-2000 Version 5/6 Non-AVCS EJ205

 

This engine requires a complete swap of most of the parts from a USDM 2.0 WRX including the intake manifold, exhaust, cam and crank gears, etc. We will have a detailed blog post describing this process coming in the near future. Since it doesn't have AVCS, simply run it on the USDM 2.0 WRX ECU after the mechanical changes to the engine are completed.

 

2001-2005 JDM EJ205 w/AVCS

 
JDM EJ205 w/AVCS

This engine is plug and play except for the addition of the bulkhead AVCS wiring and switching to the matching JDM ECU. The iWire AVCS Wiring kit for this situation would be the AVCS Wiring Kit - Bulkhead Only. This is because the AVCS wiring already exists on the engine and all you'll need to do is get communication from the ECU out to the engine.

 

2001-2005 JDM EJ207 w/AVCS

 
EJ207

This engine would be the same as the above WRX EJ205. Plug the engine in, swap the ECU, and add in the iWire AVCS Wiring Kit - Bulkhead Only.

 

Common EJ205 and EJ207 ECU Sticker Labels:

 

JDM

A7 - 1999 and 2000 WRX

F6 - 1999 and 2000 Forester Turbo

J2 - 1999 and 2000 STi ECU

V7 - 2001 WRX

V8 - 2001 STi

4M - 2002 WRX

6L - 2002 STi

5Y - 2003 and 2004 WRX

6A - 2003 and 2004 STi

B1 - 2005 STi (immobilized - do not buy)

F2 - 2005 WRX (immobilized - do not buy)

 

USDM

V2 - 2002 WRX ECU

6G - 2003 WRX ECU

7F - 2004 WRX ECU

6H - 2005 WRX ECU

 

JDM Forester Drive-by-Wire EJ205 w/AVCS - These engines tend to get listed as Impreza drive- by-wire engines, but in fact they are from 2004+ JDM Foresters.

 

For these drive-by-wire engines, the complete intake manifold with harness needs to be swapped over from the USDM WRX. This process is very straightforward because the basic setup of these engines is almost identical to the non-drive-by-wire 2001-2005 JDM WRX and STi engines. In order to get the AVCS working with this engine you'll need to track down a non-drive-by-wire 2001-2005 JDM WRX or STi ECU and purchase the iWire Subaru AVCS Wiring Kit for both the bulkhead and the intake so that the AVCS wiring can be added to both the body side and the engine side of the wiring.

 

We also carry the cable throttle intake manifold harness brand new here if you need it.

 

If you have more questions about which iWire AVCS WIring Kit to purchase for your application please send us an email to sales@iwireservices.com or give us a call at 949-510-8278 and we will be happy to assist.

 

#AVCS

Unfortunately this is not a engine platform we can support for merges.

The problem is that the ECU that came in the V1-4 WRX and STi models is non OBD2, so it will not pass smog/emissions and makes tuning extremely difficult. We can no longer wire them up as a byproduct of the OBD2 issue. We suggest finding a replacement engine that uses a modern OBD2 ECU.

Here is a guide to help find a suitable engine for your platform.

We apologize for the inconvenience and thank you again for your interest in using iWire.

This is a CANbus equipped chassis which makes swapping difficult.

At this time, there are only two ways we would recommend moving forward. The first would be to take the entire harness from headlights to taillights of a similar year turbo version on your chassis (IE 08 WRX into 08 2.5i) and run a compatible engine for that platform. It would probably require a complete donor car to get all the parts you would need. The other would be to wire up a standalone ECU that can communicate with the CANbus system of the chassis and can run whichever engine you choose.

We know this sounds crazy given we are the “Subaru Swap Guys,” but with the complexities of the project we would suggest at least considering purchasing the turbo car that you are looking to build instead of swapping.

Note: iWire is no longer wiring projects that utilize a standalone ECU.

For more information on CANbus please take a look here 

We apologize for the inconvenience and thank you again for your interest in using iWire.

This engine can work but requires modifications to run with a 2002-2005 WRX ECU and harness.

The problem is that the ECU that came in the V5/6 WRX and STi models is non OBD2, so it will not pass smog/emissions and makes tuning extremely difficult. We can no longer wire them up as a byproduct of the OBD2 issue.

Not to worry though, these engines can be modified so that a USDM 2002-2005 WRX ECU can run them. That you can make it legal as well as open up a wide variety of tuners because the Cobb Accessport is now a tuning option. The conversion process is not too complicated, and you can find more information on what parts you need here.

Please send us an email to so we can discuss your options.

This would not be a good option for your Drive by Wire Turbo application.

There are more compatible engines that can be modified to be plug and play with your application. Please take a look at this post to find that engine

We apologize for the inconvenience and thank you again for your interest in using iWire.

This engine is plug and play with your 2002-2005 WRX!

To get the most out of your new engine you'll want to add in the AVCS. To do this purchase our AVCS bulkhead kit, plug in your matching JDM ECU, and tune for the fuel you want to give it.

More information about this type of swap.

 

This would not be a good option for your Drive by Wire Turbo application.

There are more compatible engines that can be modified to be plug and play with your application. Please take a look at this post to find that engine

We apologize for the inconvenience and thank you again for your interest in using iWire.

This is a CANbus equipped chassis which makes swapping difficult.

At this time, there are only two ways we would recommend moving forward. The first would be to take the entire harness from headlights to taillights of a similar year turbo version on your chassis (IE 08 WRX into 08 2.5i) and run a compatible engine for that platform. It would probably require a complete donor car to get all the parts you would need. The other would be to wire up a standalone ECU that can communicate with the CANbus system of the chassis and can run whichever engine you choose.

We know this sounds crazy given we are the “Subaru Swap Guys,” but with the complexities of the project we would suggest at least considering purchasing the turbo car that you are looking to build instead of swapping.

Note: iWire is no longer wiring projects that utilize a standalone ECU.

For more information on CANbus please take a look here 

We apologize for the inconvenience and thank you again for your interest in using iWire.

Yes! This is a swap that we support.

We're here to help but have a few steps before you send us any harnesses to ensure everything goes smoothly.

WHAT IS OUR MERGE PROCESS

Merge Service Starts at $849.99
Turn Around Time – 4 to 6 weeks or 1 week rush fee available for $200

  1. Identify what your engine came out of exactly
    1. Take a look here if you need help figuring this out
  2. Fill out the spec sheet so we can get all the details of the swap so an iWire representative can get in touch with you
  3. Send a picture of the new engine from the crank pulley side, top down and one from driver’s side straight on.
  4. Pull the bulkhead harness from your car where the new engine is going into and send us a picture of the bulkhead harness
  5. Send a picture of the bulkhead and front harnesses along with ECU and fuel pump controller (if applicable) that goes with the new engine
  6. Pull the bulkhead harness from your car where the new engine is going into and send us a picture. 

    What do I need to send?

    The most common question asked is, what do I need to send? Unlike other car makers, Subaru integrates the wiring for the engine and ECU with the rest of the harness for the body of the car. There is not a plug that separates the ECU to engine wiring from everything else.

    1. Bulkhead harness from merged vehicle. The bulkhead harness is the part underneath the dash inside the cabin that runs along the firewall from door to door. It also includes the wiring that goes into the engine bay via the 2 grommets on the passenger’s side. The bulkhead harness will disconnect from the rear harness on the passenger’s side either at the front door (01 and older) or under the passenger’s side front seat (02+).

       

      You must provide this harness. This harness comes out of the car you are swapping into.

       

      You must provide this harness. This harness comes out of the car you are swapping into.

       

      You must provide this harness. This harness comes out of the car you are swapping into.

       

      You must provide this harness. This harness comes out of the car you are swapping into.

       

      You must provide this harness. This harness comes out of the car you are swapping into.

       

      You must provide this harness. This harness comes out of the car you are swapping into.

       

      You must provide this harness. This harness comes out of the car you are swapping into.

       

      You must provide this harness. This harness comes out of the car you are swapping into.

       

      You must provide this harness. This harness comes out of the car you are swapping into.

       

      You must provide this harness. This harness comes out of the car you are swapping into.

       

      You must provide this harness. This harness comes out of the car you are swapping into.

       

      You must provide this harness. This harness comes out of the car you are swapping into.

       

      You must provide this harness. This harness comes out of the car you are swapping into.




      Bulkhead harness in cabin and in the engine bay. (Harness from turbo car) The bulkhead harness is the part underneath the dash inside the cabin that runs along the firewall from door to door. It also includes the wiring that goes into the engine bay via the 2 grommets on the passenger’s side. The bulkhead harness will disconnect from the rear harness on the passenger’s side either at the front door (01 and older) or under the passenger’s side front seat (02+).

      For JDM applications we no longer merge them with the RHD harness due to fitment and quality issues we've seen recently.

      Instead we offer our brand new 2.0 WRX/STi harness that is pre-wired for AVCS.


      iWire's Brand New Merge Harness

      Benefits of buying our Project 2.0L Harness

      • Don't have to pull the nightmare of the donor car
      • Donor harness is old and connectors are falling apart
      • Saves around $100 in shipping
      • Prewired for AVCS ($200 value)
      • If reselling the donor, will increase value to have harness still in.

      STILL NOT SURE WHICH HARNESSES TO SEND? For more details with pictures click here

      READY TO REMOVE YOUR HARNESS? Watch us remove the harness first!


      For a full price quote for your project please fill out the iWire Merge Spec Sheet. An iWire Representative will reach out in 1-2 business days once the form is received to chat specifics about your project. Please have images ready of your ECU and engine.

      Let's get started!

      Click here to fill out the iWire Merge Spec Sheet.

      You picked the same vehicle! Please make another selection.

      This would not be a good option for your Drive by Wire Turbo application.

      There are more compatible engines that can be modified to be plug and play with your application. Please take a look at this post to find that engine

      We apologize for the inconvenience and thank you again for your interest in using iWire.

      This is a CANbus equipped chassis which makes swapping difficult.

      At this time, there are only two ways we would recommend moving forward. The first would be to take the entire harness from headlights to taillights of a similar year turbo version on your chassis (IE 08 WRX into 08 2.5i) and run a compatible engine for that platform. It would probably require a complete donor car to get all the parts you would need. The other would be to wire up a standalone ECU that can communicate with the CANbus system of the chassis and can run whichever engine you choose.

      We know this sounds crazy given we are the “Subaru Swap Guys,” but with the complexities of the project we would suggest at least considering purchasing the turbo car that you are looking to build instead of swapping.

      Note: iWire is no longer wiring projects that utilize a standalone ECU.

      For more information on CANbus please take a look here 

      We apologize for the inconvenience and thank you again for your interest in using iWire.

      Yes! This is a swap that we support.

      We're here to help but have a few steps before you send us any harnesses to ensure everything goes smoothly.

      WHAT IS OUR MERGE PROCESS

      Merge Service Starts at $849.99
      Turn Around Time – 4 to 6 weeks or 1 week rush fee available for $200

      1. Identify what your engine came out of exactly
        1. Take a look here if you need help figuring this out
      2. Fill out the spec sheet so we can get all the details of the swap so an iWire representative can get in touch with you
      3. Send a picture of the new engine from the crank pulley side, top down and one from driver’s side straight on.
      4. Pull the bulkhead harness from your car where the new engine is going into and send us a picture of the bulkhead harness
      5. Send a picture of the bulkhead and front harnesses along with ECU and fuel pump controller (if applicable) that goes with the new engine
      6. Pull the bulkhead harness from your car where the new engine is going into and send us a picture. 

        What do I need to send?

        The most common question asked is, what do I need to send? Unlike other car makers, Subaru integrates the wiring for the engine and ECU with the rest of the harness for the body of the car. There is not a plug that separates the ECU to engine wiring from everything else.

        1. Bulkhead harness from merged vehicle. The bulkhead harness is the part underneath the dash inside the cabin that runs along the firewall from door to door. It also includes the wiring that goes into the engine bay via the 2 grommets on the passenger’s side. The bulkhead harness will disconnect from the rear harness on the passenger’s side either at the front door (01 and older) or under the passenger’s side front seat (02+).

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.




          Bulkhead harness in cabin and in the engine bay. (Harness from turbo car) The bulkhead harness is the part underneath the dash inside the cabin that runs along the firewall from door to door. It also includes the wiring that goes into the engine bay via the 2 grommets on the passenger’s side. The bulkhead harness will disconnect from the rear harness on the passenger’s side either at the front door (01 and older) or under the passenger’s side front seat (02+).

          For JDM applications we no longer merge them with the RHD harness due to fitment and condition issues with them. Instead we offer our brand new 2.0 WRX/STi harness that is pre-wired for AVCS.


          iWire's Brand New Merge Harness

           

           

          Turbo Bulkhead

          Front Harness The front harness is the section that goes through the driver's side fender, attached is the engine bay fuse box, and wraps around to the headlights and radiator fans.

          Turbo Font harness


          Fuel pump controller This module is located in the trunk on the passenger side, behind the side wall carpet. This will not exist on non-turbo cars.
          If you do not have this, iWire can supply this for $150.00.

          Fuel pump controller

           

           

          Turbo Bulkhead

          Front Harness The front harness is the section that goes through the driver's side fender, attached is the engine bay fuse box, and wraps around to the headlights and radiator fans.

          Turbo Font harness


          Fuel pump controller This module is located in the trunk on the passenger side, behind the side wall carpet. This will not exist on non-turbo cars.
          If you do not have this, iWire can supply this for $150.00.

          Fuel pump controller


          ECU Set Full ECU set with matching immobilizer box and key with ignition cylinder.
          If you don't have this, iWire can supply this for an additional charge.

          Immobilizer

           

          We will need both the front harness and the bulkhead harness from the WRX along with the fuel pump controller.


          Fuel pump controller This module is located in the trunk on the passenger side, behind the side wall carpet. This will not exist on non-turbo cars.

          If you do not have this, iWire can supply this for $150.00.

          Fuel pump controller

          ECU Set Full ECU set with matching immobilizer box and key with ignition cylinder.

          Note: 04 models are not immobilized

          Immobilizer

           

          Turbo Bulkhead

          Front Harness The front harness is the section that goes throguh the driver's side fender, attached is the engine bay fuse box, and wraps around to the headlights and radiator fans.


          Fuel pump controller This module is located in the trunk on the passenger side, behind the side wall carpet. This will not exist on non-turbo cars.
          If you do not have this, iWire can supply this for $150.00.

          Fuel pump controller


          ECU Set Full ECU set with matching immobilizer box and key with ignition cylinder.
          If you don't have this, iWire can supply this for an additional charge.

          Note: 04 models are not immobilized

          Immobilizer

          Benefits of buying our Project 2.0L Harness

          • Don't have to pull the nightmare of the donor car
          • Donor is old and connectors are falling apart
          • Saves around $100 in shipping
          • Prewired for AVCS ($200 value)
          • If reselling the donor, will increase value to have harness still in.

          Let us us supply our brand new harness instead of using the old beat up one!

          Benefits of buying our Project 2.0L Harness

          • Don't have to pull the nightmare of the donor car
          • Gut the front end of the car
          • It's old and connectors are falling apart
          • Saves around $100 in shipping
          • Prewired for AVCS ($200 value)
          • If reselling the donor, will increase value to have harness still in.

          STILL NOT SURE WHICH HARNESSES TO SEND? For more details with pictures click here

          READY TO REMOVE YOUR HARNESS? Watch us remove the harness first!


          For a full price quote for your project please fill out the iWire Merge Spec Sheet. An iWire Representative will reach out in 1-2 business days once the form is received to chat specifics about your project. Please have images ready of your ECU and engine.

          Let's get started!

          Click here to fill out the iWire Merge Spec Sheet.

          This Could be an Option For Your Project

          As long as the basic setup matches your platform you could use the longblock and retain your original wiring with ECU. Please take a look at this post for more information on compatibility.

          Thank you again for your interest in using iWire.

          This is a CANbus equipped chassis which makes swapping difficult.

          At this time, there are only two ways we would recommend moving forward. The first would be to take the entire harness from headlights to taillights of a similar year turbo version on your chassis (IE 08 WRX into 08 2.5i) and run a compatible engine for that platform. It would probably require a complete donor car to get all the parts you would need. The other would be to wire up a standalone ECU that can communicate with the CANbus system of the chassis and can run whichever engine you choose.

          We know this sounds crazy given we are the “Subaru Swap Guys,” but with the complexities of the project we would suggest at least considering purchasing the turbo car that you are looking to build instead of swapping.

          Note: iWire is no longer wiring projects that utilize a standalone ECU.

          For more information on CANbus please take a look here 

          We apologize for the inconvenience and thank you again for your interest in using iWire.

          Yes! This is a swap that we support.

          There are some differences between 2002-2005 WRX and newer drive-by-wire platforms. Please take a look at the 16bit vs. 32bit blog post for more information.

          We're here to help but have a few steps before you send us any harnesses to ensure everything goes smoothly.

          WHAT IS OUR MERGE PROCESS

          Merge Service Starts at $849.99
          Turn Around Time – 4 to 6 weeks or 1 week rush fee available for $200

          1. Identify what your engine came out of exactly
            1. Take a look here if you need help figuring this out
          2. Fill out the spec sheet so we can get all the details of the swap so an iWire representative can get in touch with you
          3. Send a picture of the new engine from the crank pulley side, top down and one from driver’s side straight on. 
          4. Pull the bulkhead harness from your car where the new engine is going into and send us a picture of the bulkhead harness
          5. Send a picture of the bulkhead and front harnesses along with ECU and fuel pump controller (if applicable) that goes with the new engine
          6. Pull the bulkhead harness from your car where the new engine is going into and send us a picture.

           

          What do I need to send?

          The most common question asked is, what do I need to send? Unlike other car makers, Subaru integrates the wiring for the engine and ECU with the rest of the harness for the body of the car. There is not a plug that separates the ECU to engine wiring from everything else.

          Bulkhead harness from merged vehicle. The bulkhead harness is the part underneath the dash inside the cabin that runs along the firewall from door to door. It also includes the wiring that goes into the engine bay via the 2 grommets on the passenger’s side. The bulkhead harness will disconnect from the rear harness on the passenger’s side either at the front door (01 and older) or under the passenger’s side front seat (02+).

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.


          Front Harness The front harness is the section that goes throguh the driver's side fender, attached is the engine bay fuse box, and wraps around to the headlights and radiator fans.

           


           

          Bulkhead harness in cabin and in the engine bay. (Harness from turbo car) The bulkhead harness is the part underneath the dash inside the cabin that runs along the firewall from door to door. It also includes the wiring that goes into the engine bay via the 2 grommets on the passenger’s side. The bulkhead harness will disconnect from the rear harness on the passenger’s side either at the front door (01 and older) or under the passenger’s side front seat (02+).

          For JDM applications we no longer merge them with the RHD harness due to fitment and condition issues with them. Instead we offer our brand new 2.0 WRX/STi harness that is pre-wired for AVCS.


          iWire's Brand New Merge Harness

           

          We will need both the front harness and the bulkhead harness from the WRX along with the fuel pump controller.

          Fuel pump controller

           

           

          Turbo Bulkhead

          Front Harness The front harness is the section that goes through the driver's side fender, attached is the engine bay fuse box, and wraps around to the headlights and radiator fans.

          Turbo Font harness


          Fuel pump controller This module is located in the trunk on the passenger side, behind the side wall carpet. This will not exist on non-turbo cars.
          If you do not have this, iWire can supply this for $150.00.

          Fuel pump controller


          ECU Set Full ECU set with matching immobilizer box and key with ignition cylinder.
          If you don't have this, iWire can supply this for an additional charge.

          Immobilizer

           

          We will need both the front harness and the bulkhead harness from the WRX along with the fuel pump controller.


          Fuel pump controller This module is located in the trunk on the passenger side, behind the side wall carpet. This will not exist on non-turbo cars.

          If you do not have this, iWire can supply this for $150.00.

          Fuel pump controller

          ECU Set Full ECU set with matching immobilizer box and key with ignition cylinder.

          Note: 04 models are not immobilized

          Immobilizer

           

          We will need both the front harness and the bulkhead harness from the WRX along with the fuel pump controller.


          Fuel pump controller This module is located in the trunk on the passenger side, behind the side wall carpet. This will not exist on non-turbo cars.

          Fuel pump controller


          ECU Set Full ECU set with matching immobilizer box and key with ignition cylinder.

          Note: 04 models are not immobilized

          Immobilizer

          Benefits of buying our Project 2.0L Harness

          • Don't have to pull the nightmare of the donor car
          • Gut the front end of the car
          • It's old and connectors are falling apart
          • Saves around $100 in shipping
          • Prewired for AVCS ($200 value)
          • If reselling the donor, will increase value to have harness still in.

          Have us supply our brand new harness instead of using the old one and having to pay for shipping and worrying about something old and cracked.

          Benefits of buying our Project 2.0L Harness

          • Don't have to pull the nightmare of the donor car
          • Gut the front end of the car
          • It's old and connectors are falling apart
          • Saves around $100 in shipping
          • Prewired for AVCS ($200 value)
          • If reselling the donor, will increase value to have harness still in.

          STILL NOT SURE WHICH HARNESSES TO SEND? For more details with pictures click here

          READY TO REMOVE YOUR HARNESS? Watch us remove the harness first!

           

          For a full price quote for your project please fill out the iWire Merge Spec Sheet. An iWire Representative will reach out in 1-2 business days once the form is received to chat specifics about your project. Please have images ready of your ECU and engine.

          Let's get started!

          Click here to fill out the iWire Merge Spec Sheet.

          This Could be an Option For Your Project

          As long as the basic setup matches your platform you could use the longblock and retain your original wiring with ECU. Please take a look at this post for more information on compatibility.

          Thank you again for your interest in using iWire.

          This is a CANbus equipped chassis which makes swapping difficult.

          At this time, there are only two ways we would recommend moving forward. The first would be to take the entire harness from headlights to taillights of a similar year turbo version on your chassis (IE 08 WRX into 08 2.5i) and run a compatible engine for that platform. It would probably require a complete donor car to get all the parts you would need. The other would be to wire up a standalone ECU that can communicate with the CANbus system of the chassis and can run whichever engine you choose.

          We know this sounds crazy given we are the “Subaru Swap Guys,” but with the complexities of the project we would suggest at least considering purchasing the turbo car that you are looking to build instead of swapping.

          Note: iWire is no longer wiring projects that utilize a standalone ECU.

          For more information on CANbus please take a look here 

          We apologize for the inconvenience and thank you again for your interest in using iWire.

          Yes! This is a swap that we support.

          There are some differences between 2002-2005 WRX and newer drive-by-wire platforms. Please take a look at the 16bit vs. 32bit blog post for more information.

          We're here to help but have a few steps before you send us any harnesses to ensure everything goes smoothly.

          WHAT IS OUR MERGE PROCESS

          Merge Service Starts at $849.99
          Turn Around Time – 4 to 6 weeks or 1 week rush fee available for $200

          1. Identify what your engine came out of exactly
            1. Take a look here if you need help figuring this out
          2. Fill out the spec sheet so we can get all the details of the swap so an iWire representative can get in touch with you
          3. Send a picture of the new engine from the crank pulley side, top down and one from driver’s side straight on.
          4. Pull the bulkhead harness from your car where the new engine is going into and send us a picture of the bulkhead harness
          5. Send a picture of the bulkhead and front harnesses along with ECU and fuel pump controller (if applicable) that goes with the new engine
          6. Pull the bulkhead harness from your car where the new engine is going into and send us a picture.

           

          What do I need to send?

          The most common question asked is, what do I need to send? Unlike other car makers, Subaru integrates the wiring for the engine and ECU with the rest of the harness for the body of the car. There is not a plug that separates the ECU to engine wiring from everything else.

          Bulkhead harness from merged vehicle. The bulkhead harness is the part underneath the dash inside the cabin that runs along the firewall from door to door. It also includes the wiring that goes into the engine bay via the 2 grommets on the passenger’s side. The bulkhead harness will disconnect from the rear harness on the passenger’s side either at the front door (01 and older) or under the passenger’s side front seat (02+).

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.


          Front Harness The front harness is the section that goes throguh the driver's side fender, attached is the engine bay fuse box, and wraps around to the headlights and radiator fans.

           


           

          Bulkhead harness in cabin and in the engine bay. (Harness from turbo car) The bulkhead harness is the part underneath the dash inside the cabin that runs along the firewall from door to door. It also includes the wiring that goes into the engine bay via the 2 grommets on the passenger’s side. The bulkhead harness will disconnect from the rear harness on the passenger’s side either at the front door (01 and older) or under the passenger’s side front seat (02+)

           

          We will need both the front harness and the bulkhead harness from the WRX along with the fuel pump controller.

          Fuel pump controller

           

           

          Turbo Bulkhead

          Front Harness The front harness is the section that goes throguh the driver's side fender, attached is the engine bay fuse box, and wraps around to the headlights and radiator fans.

          Turbo Font harness


          Fuel pump controller This module is located in the trunk on the passenger side, behind the side wall carpet. This will not exist on non-turbo cars.
          If you do not have this, iWire can supply this for $150.00.

          Fuel pump controller


          ECU Set Full ECU set with matching immobilizer box and key with ignition cylinder.
          If you don't have this, iWire can supply this for an additional charge.

          Immobilizer

           

          Turbo Bulkhead

          Front Harness The front harness is the section that goes through the driver's side fender, attached is the engine bay fuse box, and wraps around to the headlights and radiator fans.


          Fuel pump controller This module is located in the trunk on the passenger side, behind the side wall carpet. This will not exist on non-turbo cars.
          If you do not have this, iWire can supply this for $150.00.

          Fuel pump controller


          ECU Set Full ECU set with matching immobilizer box and key with ignition cylinder.
          If you don't have this, iWire can supply this for an additional charge.

          Immobilizer

           

          We will need both the front harness and the bulkhead harness from the WRX along with the fuel pump controller.


          Fuel pump controller This module is located in the trunk on the passenger side, behind the side wall carpet. This will not exist on non-turbo cars.

          Fuel pump controller


          ECU Set Full ECU set with matching immobilizer box and key with ignition cylinder.

          Note: 04 models are not immobilized

          Immobilizer

          Benefits of buying our Project 2.0L Harness

          • Don't have to pull the nightmare of the donor car
          • Gut the front end of the car
          • It's old and connectors are falling apart
          • Saves around $100 in shipping
          • Prewired for AVCS ($200 value)
          • If reselling the donor, will increase value to have harness still in.

          Have us supply our brand new harness instead of using the old one and having to pay for shipping and worrying about something old and cracked.

          Benefits of buying our Project 2.0L Harness

          • Don't have to pull the nightmare of the donor car
          • Gut the front end of the car
          • It's old and connectors are falling apart
          • Saves around $100 in shipping
          • Prewired for AVCS ($200 value)
          • If reselling the donor, will increase value to have harness still in.

          STILL NOT SURE WHICH HARNESSES TO SEND? For more details with pictures click here

          READY TO REMOVE YOUR HARNESS? Watch us remove the harness first!

           

          For a full price quote for your project please fill out the iWire Merge Spec Sheet. An iWire Representative will reach out in 1-2 business days once the form is received to chat specifics about your project. Please have images ready of your ECU and engine.

          Let's get started!

          Click here to fill out the iWire Merge Spec Sheet.

          This Could be an Option For Your Project

          As long as the basic setup matches your platform you could use the longblock and retain your original wiring with ECU. Please take a look at this post for more information on compatibility.

          Thank you again for your interest in using iWire.

          This is a CANbus equipped chassis which makes swapping difficult.

          At this time, there are only two ways we would recommend moving forward. The first would be to take the entire harness from headlights to taillights of a similar year turbo version on your chassis (IE 08 WRX into 08 2.5i) and run a compatible engine for that platform. It would probably require a complete donor car to get all the parts you would need. The other would be to wire up a standalone ECU that can communicate with the CANbus system of the chassis and can run whichever engine you choose.

          We know this sounds crazy given we are the “Subaru Swap Guys,” but with the complexities of the project we would suggest at least considering purchasing the turbo car that you are looking to build instead of swapping.

          Note: iWire is no longer wiring projects that utilize a standalone ECU.

          For more information on CANbus please take a look here 

          We apologize for the inconvenience and thank you again for your interest in using iWire.

          Yes! This is a swap that we support.

          There are some differences between 2002-2005 WRX and newer drive-by-wire platforms. Please take a look at the 16bit vs. 32bit blog post for more information.

          We're here to help but have a few steps before you send us any harnesses to ensure everything goes smoothly.

          WHAT IS OUR MERGE PROCESS

          Merge Service Starts at $849.99
          Turn Around Time – 4 to 6 weeks or 1 week rush fee available for $200

          1. Identify what your engine came out of exactly
            1. Take a look here if you need help figuring this out
          2. Fill out the spec sheet so we can get all the details of the swap so an iWire representative can get in touch with you
          3. Send a picture of the new engine from the crank pulley side, top down and one from driver’s side straight on.
          4. Pull the bulkhead harness from your car where the new engine is going into and send us a picture of the bulkhead harness
          5. Send a picture of the bulkhead and front harnesses along with ECU and fuel pump controller (if applicable) that goes with the new engine
          6. Pull the bulkhead harness from your car where the new engine is going into and send us a picture.

          What do I need to send?

          The most common question asked is, what do I need to send? Unlike other car makers, Subaru integrates the wiring for the engine and ECU with the rest of the harness for the body of the car. There is not a plug that separates the ECU to engine wiring from everything else.

          Bulkhead harness from merged vehicle. The bulkhead harness is the part underneath the dash inside the cabin that runs along the firewall from door to door. It also includes the wiring that goes into the engine bay via the 2 grommets on the passenger’s side. The bulkhead harness will disconnect from the rear harness on the passenger’s side either at the front door (01 and older) or under the passenger’s side front seat (02+).

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.

           

          You must provide this harness. This harness comes out of the car you are swapping into.


          Front Harness The front harness is the section that goes throguh the driver's side fender, attached is the engine bay fuse box, and wraps around to the headlights and radiator fans.




          Bulkhead harness in cabin and in the engine bay. (Harness from turbo car) The bulkhead harness is the part underneath the dash inside the cabin that runs along the firewall from door to door. It also includes the wiring that goes into the engine bay via the 2 grommets on the passenger’s side. The bulkhead harness will disconnect from the rear harness on the passenger’s side either at the front door (01 and older) or under the passenger’s side front seat (02+).

          For JDM applications we no longer merge them with the RHD harness due to fitment and condition issues with them. Instead we offer our brand new 2.0 WRX/STi harness that is pre-wired for AVCS.


          iWire's Brand New Merge Harness

           

          We will need both the front harness and the bulkhead harness from the WRX along with the fuel pump controller.

          Fuel pump controller

           

           

          Turbo Bulkhead

          Front Harness The front harness is the section that goes throguh the driver's side fender, attached is the engine bay fuse box, and wraps around to the headlights and radiator fans.

          Turbo Font harness


          Fuel pump controller This module is located in the trunk on the passenger side, behind the side wall carpet. This will not exist on non-turbo cars.
          If you do not have this, iWire can supply this for $150.00.

          Fuel pump controller


          ECU Set Full ECU set with matching immobilizer box and key with ignition cylinder.
          If you don't have this, iWire can supply this for an additional charge.

          Immobilizer

           

          We will need both the front harness and the bulkhead harness from the WRX along with the fuel pump controller.


          Fuel pump controller This module is located in the trunk on the passenger side, behind the side wall carpet. This will not exist on non-turbo cars.

          If you do not have this, iWire can supply this for $150.00.

          Fuel pump controller

          ECU Set Full ECU set with matching immobilizer box and key with ignition cylinder.

          Note: 04 models are not immobilized

          Immobilizer

           

          Turbo Bulkhead

          Front Harness The front harness is the section that goes through the driver's side fender, attached is the engine bay fuse box, and wraps around to the headlights and radiator fans.


          Fuel pump controller This module is located in the trunk on the passenger side, behind the side wall carpet. This will not exist on non-turbo cars.
          If you do not have this, iWire can supply this for $150.00.

          Fuel pump controller


          ECU Set Full ECU set with matching immobilizer box and key with ignition cylinder.
          If you don't have this, iWire can supply this for an additional charge.

          Note: 04 models are not immobilized

          Immobilizer

          Benefits of buying our Project 2.0L Harness

          • Don't have to pull the nightmare of the donor car
          • Gut the front end of the car
          • It's old and connectors are falling apart
          • Saves around $100 in shipping
          • Prewired for AVCS ($200 value)
          • If reselling the donor, will increase value to have harness still in.

          Have us supply our brand new harness instead of using the old one and having to pay for shipping and worrying about something old and cracked.

          Benefits of buying our Project 2.0L Harness

          • Don't have to pull the nightmare of the donor car
          • Gut the front end of the car
          • It's old and connectors are falling apart
          • Saves around $100 in shipping
          • Prewired for AVCS ($200 value)
          • If reselling the donor, will increase value to have harness still in.

          STILL NOT SURE WHICH HARNESSES TO SEND? For more details with pictures click here

          READY TO REMOVE YOUR HARNESS? Watch us remove the harness first!


          For a full price quote for your project please fill out the iWire Merge Spec Sheet. An iWire Representative will reach out in 1-2 business days once the form is received to chat specifics about your project. Please have images ready of your ECU and engine.

          Let's get started!

          Click here to fill out the iWire Merge Spec Sheet.

          Unfortunately this is not a engine platform we can support for merges.

          iWire is no longer building harnesses for 6 cylinders swaps because they require a standalone ECU. Due to the updated EPA restrictions we have decided to focus on stock ECU applications that can be made legal. Although some people have made it work with the stock 6 cylinder ECU, several issues exist with this route. We are currently unable to solve these issues, which leaves us unable to deliver a harness up to iWire standards.

          For more information on 6 Cylinder applications, click here.

          We apologize for the inconvenience and thank you again for your interest in using iWire.

          This doesn't require a harness merge as long as the longblock is compatible with your platform.

          Please reference this post to confirm the new engine will work with your original car's wiring.

          We apologize for the inconvenience and thank you again for your interest in using iWire.

          This Could be an Option For Your Project

          As long as the basic setup matches your platform you could use the longblock and retain your original wiring with ECU. Please take a look at this post for more information on compatibility.

          For Single to Dual AVCS application (IE EJ20XY swap in a 08 WRX) please take a look here. 

          Thank you again for your interest in using iWire.

          This is a CANbus equipped chassis which makes swapping difficult.

          At this time, there are only two ways we would recommend moving forward. The first would be to take the entire harness from headlights to taillights of a similar year turbo version on your chassis (IE 08 WRX into 08 2.5i) and run a compatible engine for that platform. It would probably require a complete donor car to get all the parts you would need. The other would be to wire up a standalone ECU that can communicate with the CANbus system of the chassis and can run whichever engine you choose.

          We know this sounds crazy given we are the “Subaru Swap Guys,” but with the complexities of the project we would suggest at least considering purchasing the turbo car that you are looking to build instead of swapping.

          Note: iWire is no longer wiring projects that utilize a standalone ECU.

          For more information on CANbus please take a look here 

          We apologize for the inconvenience and thank you again for your interest in using iWire.

          Engines from CANbus equipped models are more challenging to swap but we likely can help. Below are the engines that fit this category.

          2005-2012 Legacy GT
          2005-2009 Outback XT
          2008-2014 WRX
          2008-2022 STi
          2009-2013 Forester XT

          JDM EJ20XY and V10 STi

          To get this working we'll utilize an compatible ECU from a NON CANbus equipped car. More about this process can be found here.

          If your engine is from a Dual AVCS equipped Model, we will use a NON CANbus ECU as well but the exhaust side AVCS will not be functional because the only models that came with Dual AVCS are also CANbus equipped.

          Not sure what CANbus is? Click here.

          Not able to find what you're looking for? Contact us.