Well that's cali...they are a bunch of fucking ignorant assholes over there.
As for florida, they recently changed the exhaust law from...no modifications effecting emissions...to...no modifications altering the factory exhaust system...ie. NO MODIFICATIONS PERIOD.
Time for exhaust cut outs from 3" header collectors going into factory exhausts

...cop can't tell it's not factory as you pull away and then just tip in the throttle past 3/4 of the way and BAM exhaust cut out opens ha ha...love to see the look on the cops face then since he couldn't physically SEE that is what is making the exhaust loud.