nd22121

So I got my car inspected today and I got a call saying that he couldn't get a reading on my emissions.
Yesterday I revered my sct tune back to stock and I was wondeirng if mayebe that's why. He told me to drive it to work and back to hm tomorrow and he'll try the test again.
Any suggestions?
I do need to return to stock correct? I had my 93 tune on before.

ChalknCover

Did you turn the rear 02's off or something? That would be the only reason I could think they couldn't read it. Octane shouldn't have anything to do with it.

cliffyk

He couldn't scan it because the OBD2 inspection/readiness bits were reset when you flashed back to the stock tune, this will show a P1000 DTC with a scan tool--it may take one or two complete drive cycles to reset them.

nd22121

Thanks for that info. Hopefully my drive to and from work will complete one of those cycles in that link to that article.