Superfrigincow

That is the problem the damn thing is so loud i cant hear much past it. I think I hooked the o2 up wrong i think it should be on the white wire not the green wire. The car is real sluggish though I dont want to lay into in until im sure that its not going to die on me.

CivicSiR

hey, i had the exact same problem. I figured that after boosting you need better gas. After pumping 91 gas the noise seems to disappear. try it. And make sure you do timing. It might help.