is useless to reason w/ cops, they are only law enforcers, take it to court if u wanna reason
i think for ur exhaust u can get ur mech sign a paper saying those are street legal exhaust system, thats installed properly, and take it to court, it will get drop(but it better be a street legal install… w/ cats and everything, cuz the mech who sign the paper will hava put his/her licence on the line for ya)