the laws are the same for harleys... its just not enforced very often so they run thier straight pipes and dont give a shit. Personally the noise dont bother me... i kinda like the rumble of harleys but i can understand other peoples concerns with how obnoxious they are.
I'm pretty sure if you had a Harley and rapped it off they'd call the cops then too...Like Sun says, every neighborhood has 1.......I even have to admit a friend of mine is (was) that neighbor , he whines whenever his next door neighbor rides their quad down the street...even goes out to the street and yells at him! Not sure why itbothers him so much! Just being a dick I guess!