I know people have passed smog here in CA. with headers, as stated above the main cat will do the job. I was wondering if anyone who passed with headers has the readout of the ppm readings. I think they test for CO, NOS, and of course O2 at two different speeds.

1999 Toreador Red SVT, DOB 4/22/99, 2005 Of 2760. "Many posted questions are answered by farm boys"