Never had a car I really had to worry about it, and so far including my truck with headers and hi flo cats from the highway sniffers.
But kinda eyeballing a supercharged car that has a aftermarket exhaust. Dealer states it doesn't pass emissions but will with the original exhaust which is included....
I need to just go and look at it. I have a hard time believing just bolt on stuff past the cats would matter, so I'm assuming it's at least mid pipes that don't use a cat I'm guessing. If it's a full exhaust all the way to include headers that don't fit oem I'm probably not going to want to mess with the expense of swapping them out periodically.
I'm assuming I would have to go to a facility the first time before relying on just passing the highway onramp sniffers in the future?