Originally Posted by vision.dynamix
According to the law, non-oem replacement exhaust = illegal. Louder than stock = illegal
Illegal = will not pass inspection.
If you have no cel, they're not going to know if the downpipe is catted or catless. unless it's loud
Your mileage may vary. Many here pass with fully catless loud cars. And I've seen people fail for the same.
it's up to the discretion of the inspection station to determine if your exhaust is too loud. no, they won't be able to tell if you're catted or not from a basic inspection, but i've had a loud exhaust warrant a few revs, then putting the car on a lift and looking for a cat.
just my two cents.