ive got a turbo civic with a 3 inch and ive never been pulled over just because, ive only been pulled over once for speeding but was luckily able to get out of it, my exhaust is loud ....but my car is very low key and not flashy at all so maybe that has somethig to do with it. very dark car as well so it surely doesnt stick out except of course the shine .having a z is definitely a plus cause most youngins that the police pinpoint dont drive a car that nice.