And then there’s the reality of the situation - most police officers don’t carry decibel meters. If you get a noise violation, it’s because you were being a complete jackass. Most of the cops I know have Harley’s; they’ve got muscle cars, they’ve got giant 4wd trucks with performance exhausts. They’re not going create a giant paperwork headache for themselves unless they’re positive you’re over 95 dB’s, which means if you get that ticket it’s because you’re WAY over. And even then, you probably got pulled over for something else and failed the “attitude test” on top of that. So, don’t be a jackass, don’t run open pipes, and you won’t get that ticket.