Originally Posted by DUI Elite
Hmm, thats pretty awesome. I wonder if you can see the same gains on stock exhaust. Thanks for the reply.
Out of curiosity (yeah, I have to know cuz i'm lost) what is the visual test?
They've always only hooked up to my OBD port and checked that all the sensors are ready.
In California, they will look underneath your car and engine bay for the cats.