If you use Flashpro, it will eliminate the CEL. If your inspection gets under the car you will fail the visual portion of the test. As for "sniffer" test, well I highly doubt youll pass that without a CAT. Just keep your stock header and throw it on before the test. Dont get a legal header complete waste of moneyIVe decided I want to do I/H/e and flaspro. if I get a race header and flaspro and can't pass emmisions then How am I supposed to get it inspected? With a defouler? Does that fix the cel or does flaspro? And does it just make the light go off to where it won't come back on if there is a mechanical failure? I just want my cel to work with all my mods so I know my car is ok. Maybe I should just get a normal header and not a race header with a cat to stay legal.