Merge Services - 08 Plus

As of December 1st, we will only be taking on 25 more harness merges before we no longer offer this service. 

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 high-quality and reliable harness so you can enjoy driving the car and not worry about electrical gremlins. 

Please Click Here to Find Out How to Reserve Your Spot

Please Read the Open Letter to Our Merge Customers

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Key Requirements for the Chassis

Chassis is one of the following
1993-2001 Impreza/OBS
1995-2004 Legacy
1995-2004 Outback
1998-2002 Forester

Chassis must be left-hand-drive
Dash is original to the chassis
The post-swap transmission needs to be a manual
We will do auto-to-manual conversions with the engine swap wiring

    Key requirements for the Engine

    Engine must be from an OBD2 model and NON-CANbus. They are the following

    2001-2006 JDM STi (using non immobilized ECU from 2001-2004)
    2001-2006 JDM WRX (using non immobilized ECU from 2001-2004)
    2002-2007 WRX
    2004-2007 STi
    2004-2008 Forester XT
    2004-2006 Baja XT


    Engine MUST be the same year or newer than the chassis
    Due to increased EPA enforcement, we no longer wire up an engine that is older than the chassis it is being installed in.

    Please Click Here to Find Out How to Reserve Your Spot

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    This Could be an Option For Your Project

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

    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 wild, given we are the “Subaru Swap Guys,” but with the complexities of the project, we would suggest at least considering purchasing the turbo car 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 may be able to 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 a compatible ECU (if possible) 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.

    Please contact us directly for more information about this type of swap.