Originally Posted by DoomsdayFAN
I've been thinking a lot about buying the 4-1 Header and putting it on right after smog season. Hopefully that, in addition with a CAI & Stealth Exhaust, will increase my get up and go
over stock quite substantially.
Go for the Fwerk's header/flex/stealth muffler & then add a tune to turn off the rear o2 senser. How do they check emmission's down there? Plug in to the OBD2 connecter & check for code's or what?