Did he even test your exhaust for a decibel reading? Your exhaust note can't exceed over 95db which is like the standard (someone correct me if im wrong). I think Fl can be higher maybe???? Do some research for the legal db limit in fl and go out and but a tester and test your own car with a friend. If you get lower than 95 or whatever the legal limit you find it to be.
take it to court. If its higher than your pretty much shit outta luck bro unless maybe you can invent some shit about your car being a rotary and its need to breathe better and be less restrictive. Good luck where to begin?
www.google.com would be a good start.
E