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...

I have been over all sorts of stuff and I am finally going to post on here and see what feedback you guys might have. Car: 2002 WRX, 2.5L Sti block, 2.0L heads, stock head gaskets, 900cc injectors, aftermarket fuel rail and regulator (same pressure as stock), VF39 turbo at 15psi, silicone turbo...

I've actually seen a couple 2.5rs' on the road before, and they look like the same thing as a WRX. but i guess they have the 2.5 EJ? And i've seen them with no hood scoops!? Why is that, are they even turbo?:confused: are they the really base model WRX? i don't know anything about the 2.5rs and...

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...