Here in Colorado it only applies to the Denver city limits. The basic idea of the law is that you have to have the factory exhaust on your bike. There is a stamp on the factory pipe that certifies it meets EPA regs for sound if it isn't there you'll get a ticket.

It is because downtown businesses were losing customers because idiots would rev the crap out of their open exhaust, and in the concrete canyons of downtown it would reverberate through the streets. I agreed that this sucked.

http://www.amadirectlink.com/news/2007/Denver.asp



In application of the law though as long as you're not an idiot and rap the bike up where people are enjoying their lunch, you should be fine. Remeber a lot of cops ride cruisers too, at least they do out here, don't be a jerk and life is good.

It sucks that you had a neighbor turn you in, I bet his ancestors turned in people to the Nazis too.