Actually it works incredibly well unlike the regular WRX. It works fantastic when you combine with a downpipe though.CloNeGTS said:SUS is Blitz's intake system. There is only one that fits the WRX.
I wouldn't expect that kind of gains from the intake only. Honestly, your best starting place for more power is to open up the backside (downpipe, exhaust) before shoving more air into it.
Looks like 2.25 inch. The downpipe/exhaust combo is worth some serious power. I am using my downpipe with stock exhaust and still making great power.coxSTI said:What is the diameter of the STI exhuast? is it a 2 1/2 or 3inch. If its 2 1/2 then I was thinking of the Turbo XS exhaust, its 3inchs I believe. And just to comfirm, we dont need the uppipe, because Subaru already modified that part?
Thanks for the other stuff!