I have read a lot of conflictiong information on this What are the differences/similarities? Are they both using the same block?

*** This guide was written in my opinion and I am not responsible for any damages caused by following it, nor am I responsible for any legal repercussions of following this guide. After 10 private messages, 20 instant messages, and many phone calls a day; I have decided to write a modification...

Hey guys... Just want to clarify something... The a/f ratio of the wrx is being maintained at around 14.7 by the stock ecu... So, does that mean even as rpm rises, the a/f ratio is maintained at that level? Or does it get richer as rpm increases??? Thanks!

I am writing this thread in because “Whats a good Blow Off Valve” Is becoming a more and more frequent question. There are threads about Blow off valves and why to avoid them already but they don’t contain the description that I think many new drivers need. In this thread I will attempt to...

Does anyone have a list of compatable engine swaps i could do with my 2002 WRX? Does anyone have any experience or advice for me on this subject?