If you are looking for information on the older generation non-AVCS engines, please 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...
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Subaru Wiring Harnesses Explained
This iWire blog post breaks down some basic harness terminology. We hope these diagrams will make it clear exactly which harness is which and the harnesses needed to complete your merge. Subarus are a bit different from most cars. With most manufacturers the ECU to engine wiring harness is all...
Subaru Dash Swap Guide
 DISCLAIMER! WARNING! ALERT! For those who have a dash swap, we are not trying to pick on you. We understand there are many reasons why people would do it, but we have our reasons for why not to do it. iWire has wired GC swaps in every imaginable way and...
How to Wire Your Non Turbo Subaru for a Turbo Engine Swap
When installing a different engine type (e.g., NA to turbo) into a Subaru chassis, the Engine Control Unit (ECU) also needs to be swapped in to get the engine running correctly. ECUs, with almost no exception, are not interchangeable if the model and year of the car do not match, so...
iWire Merge Order Process
December 20204 Update We are no longer providing the harness merge service. To know more about this please read the link below. Open Letter to Our Merge Customers Â
EJ20X/Y Engine into Legacy GT and Outback XT 2005-2006
    We've had a few people ask us about this swap lately so we thought we would share our expertise. This post talks about the nuances of putting an EJ20X/Y engine into a Legacy GT or Outback XT 2005-2009. The biggest difficulty is getting the exhaust side...
CANBus Part 2 - CAN Bus and your Subaru Swap
If you missed it, you could check out our Part 1 CANbus post that explains what CANbus means and which cars are CAN bus equipped. This post discusses how CANbus will affect your Subaru swap and how to work with it. _________________________________________________________________ December 20204 Update We will only be taking on...
98-01 Impreza/OBS and 98-01 Forester Differences
In this blog post we talk about the differences between the 98-01 Impreza and 98-01 Forester wiring harnesses. When swapping either the Impreza or Forester people mistakenly think that the wiring harnesses are interchangeable, but they are not. Although the interiors and engines of the cars are the same, the...