Some police like to be pricks and pick on a few about their exhaust/tint/banner/etc. However, typically, those people cause it on themselves by rev'ing up, system blasting, drawing attention to themselves, etc. If you are "adult" about your ride and not trying to show out in small towns, you should have no problems.
The police in my town are very anal. However, they don't mess with me because they know I'm not trouble! |