I dont want to influence your case by saying any of this.
I was pulled up once and the cop was just a foolish man. I know he didnt have his sound recorder on because of the way he was speaking to me.
ANYWAY... He was going around and around my car trying to defect me. He started with my tyres, but said nothing then finally got to my exhaust, which was an entire 3" system I got with the car. He said that it was too big. When he said too big that could of meant a few things..... very broad. He then said its too loud, too big.. bigger than factory. My only reply was, I have a safety and compliance certificate for it. From what I saw, maybe because of his foolishness, he had no foot to stand on with my reply. NOW some officers may have done something different and booked me. But this officers then said told me to respect the police and go home and fix my exhaust????? WTF. Signs of loss.?
I haven't really answered your question but given you some ideas about what I did when they said that stuff to me. They could of had a measuring device in their car, it could be illegal.
I have a normal aftermarket exhaust that was complied and safety certified. That is all I stand on.
You said that the police officer said your exhaust was not standard. Then he wrote you a ticket for not having a good enough silencing device. I would question that to define what a silencing device is mate.
GOOD LUCK, thats my 2 cents.
-Arbess