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Single AVCS vs Dual AVCS in your Subaru

        In Subaru cars there are two types of AVCS (Active Valve Control System). Want to know what AVCS means? Check out this blog post. Subaru has two models of AVCS engines which we break down below. Take a look here for EJ20XY Specifics.   Single AVCS...

Which Subaru Engine Do I Have?

Which Subaru engine do I have? We know this seems like a silly question but a lot of engines are mislabeled and people sometimes purchase the incorrect engine for their project. We thought we would create a guide to distinguish which engines are which. Please note this is for EJ20...

Single AVCS CANbus Equipped Engine Swap

  In this blog post, we discuss the issues with swapping a Single AVCS CANbus (shortened to CAN for the rest of this blog) equipped engine like a 2008 WRX into an older non-CAN equipped chassis like a 2002 WRX. 2023 Update: The only way iWire will perform this type of...

What is Subaru AVCS? An AVCS equipped JDM engine swap guide for your USDM 2002-2005 WRX

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...

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...

EJ20X and EJ20Y Dual AVCS

We’ve been getting this question a lot lately, "I purchased an EJ20X or an EJ20Y engine and I want to get the Dual AVCS (exhaust side AVCS) working in my car." The short answer is that unless it's a very specific case, the exhaust side AVCS is not going to...