get the giac testpipe file or add in a spacer or 2 for the o2 sensor. The stock cat(s) are rather high flowing so i dont think it should.

 

With a Chip and the highflow cat you Shouldnt throw a code. I threw a bad Pre cat o2 sensor before I put the chip in. System seems to be A-ok now though. Im gonna put a resonator on mine just to get rid of the rasp and make it more bassy.

 

Never heard of a the giac testpipe file. Guess i'll wait and see if i throw anything.

 

i know apr has it and one other, believe its giac has it also.

 

Where in atlanta is the exhaust shop, i am in the roswell area.