ok so i have a 99 silverado and im interested in getting the obx headers off ebay. but in missouri to pass inspection you have to have the cats. so how are you guys passing inspection with the y pipe that it comes with?

 

i dont have a welder.

 

Is your emissions test with a sniffer or an OBDII plug in? If it's just the plug in, you just need the rear O2's tuned out, and you will have the resonators for visual inspection. That's how I pass here in Jersey

 

good thinkin. im not sure what they use. ill try to find something about what they use.