Yeah i was wondering if anyone was runnin no cats? If so has your check engine light come on? I had a 2002 Pontiac T.A. Ws6 when i was in H.S. and had to get o2 simulators. Is there somthing like that you have to get for the G? Thanks!!!

 

ive got helix test pipes instead of my cats. when i first installed them the check engine light came on, but i reset the ecu and the light turned off. i like the mod cuz it makes the exhaust a little louder, but i dont like the rasp that comes from the valves. ive heard that the resonated test pipes eliminate that sound, but besides that great(cheap) mod.