Wath do you guys think , if I put an STi intercooler in my 04 wrx, eliminate cat ,16.5 psi and a STi fuel pump????????
It's a good decision????????

 

I think if you have a catless turboback exhaust, catless uppipe and a reflash you will be happy.

A bigger intercooler and fuel pump wont do a whole lot (as far as $$ to hp ratio) until you have a bigger turbo.

 

Yeah, don't do those mods. Get a turboback and reflash to start. And if you're going to get a fuel pump get a Walbro. That's what all STi owners switch too.