Will not work. All 49 state legal mods come off before smog and go right back on after. Some exhausts have a removable insert in the tip that restricts flow but

Will not work. All 49 state legal mods come off before smog and go right back on after. Some exhausts have a removable insert in the tip that restricts flow but also dampers the noise. Also the penalty for modification when I got pulled over and hood popped back in high school was a $400 state referee ticket. I could take my car to a state ref to get signed off or pay the fine. The motor was swapped and 100% illegal per California of course I just paid. It's just lip service with a racket on top. Quick edit: the swapped engine actually blew cleaner than the original engine before anyone chimes in there. If California cared about emissions they would only judge a car on what it blows out the tailpipe, not what is in it.