I got an epa notice about 2 months ago. It was issued by the police and stated "where" they witnessed the "excessive noise".
I was pissed off because they heard my exhaust in an enclosed area, ie driving down a small road that has shops on both sides [lots of reverb etc], similar to glenferrie road or chapel st, acland st etc. I had given my car [not the current car] some juice [from 40kmh] to speed up after some slow prick held me back for half an hour and thats exactly where some cops were sitting on the side of the road.
My worst luck, having personalised plates they never needed to jump in their car and give chase, they just reported me! Which i didnt know about until about a week later...by mail. bastards.
changed muffler, got compliance notice and sent to epa with :upurs:
I had already measured my car to be 92-93 db [using proper db meter] and there is know way the cops could tell it was over, just a case of the wrong place at the wrong time i guess...