We get calls and emails all the time about people wanting to swap an EJ20 Subaru engine into their car and we love to help with this! However, it's not enough information since the term EJ20 is a very general identification for any Subaru EJ engine...
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Subaru OBD1 vs OBD2 Explained
What is Subaru OBD? OBD stands for On Board Diagnostics. It refers to a protocol for communication with the ECU. Why do I care if my car is OBD1 vs. OBD2? If your car is OBD1 it means that there is a basic level of communication with the ECU that...
Subaru JDM Version Engine Guide
There can be a lot of confusion about Subaru JDM engine codes and version numbers, so we thought we would list the versions and their specs. This is a very general guide but should provide some insight. Version means which version of the Subaru Impreza it is. V1 is...
iWire's Subaru Wiring Harness Installation Video Guide
You asked so we delivered. Below is our Video Install Guide on how to install your Subaru wiring harness (wiring loom) in your Subaru. In the video we use a 2000 RS with a 2003 WRX Swap which is an example for 1998-2001 Imprezas, 1998-2001 Foresters, and 2002-2005 WRX...
How to Install a DCCD Controller on your Subaru
This DIY Guide explains how to install a DCCD Controller on a Subaru using our easy to use adapters. Before beginning you will need to make sure your transmission is capable of accepting a DCCD Controller. To do this check what plug is coming out of the new Subaru transmission....
Stock ECU vs Standalone ECU in your Subaru
Warning - No aftermarket standalone ECU will pass an emissions test because they do not have OBD2 communications that would be required. Update April 2022 with Cobb Green Speed With ripple effect of the Cobb Green Speed update we've gotten a lot of requests for standalone ECU harnesses. Unfortunately we...
Female vs Male Terminology for Subaru Plugs
We get a lot of confusion about which plug or terminal is needed based on female vs male. People read a forum post and then purchase the wrong side for their project. We thought we'd do a short post and define what it means when someone says a male plug...
Subaru Speed Density Explained
Our friends at Flatirons did an excellent in-depth look at the Speed Density Tuning below. Speed Density? MAF Plugs? Intake air temperature sensors? It all seems a little confusing, but no fear, iWire is here! Before we get started, a quick glossary of acronyms will help: SD - Speed Density IAT...