Jwithing
Senior Member
So apparently Missouri is getting smarter with their emissions. Use to be able to just pass when they plugged into the obd port if no lights were on. Just failed my emissions on my truck with the sensors tuned out since I'm running JBA LT catless headers. Guy told me that it threw and unsupported cat con. & O2 unsupported programming error. He said I'll need to take it back to stock tune and to make sure that the front and rear O2 sensors don't read the same level, use some spark plug foulers on the upstream sensors. Drill 1/2 inch through foulers and screw sensors into foulers, then foulers into pipe. Anyway heard of this? He told me to come back in 1.5 hours and he'd do it for whatever I wanted to give him. I asked if he'd be interested, he didn't solicit, so I don't feel like he is B.S. He said he had to do it for his Chevy, just not sure if anyone has done that here.