Its not so much have a loud exhaust, its driving it hard and them, being the cops, able to tell because your exhaust gives you away. Like BigDare having his buddyclubII... thats one of the loudest exhaust I've ever heard besides running straight pipe(s). I'm sure he hasn't a problem because he doesn't race between ever stop light/sign or rev everywhere he goes. And I'm not saying you do, but you clearly stated,"true it was my fault for the exhaust had to test out my new ecu" so he heard you because you were probably going threw some gears.