i went with Berk HFC because of the extended O2 censor (your less likely to throw a CEL) but i went with the stillen CAI and then after that i got the agency power exhaust and that is very deep sounds kind of like an STI but more refined
__________________
2011 WRX STICobb Accessport, Nameless Performance exhaust, COBB SF Intake, COBB downpipe, 20% tint, Work Emotion XD9's
|