Originally Posted by Dave2
Based upon the OP's comment that his exhaust is "quite literally a straight pipe" then this ticket is spot on.
No one should be subjected to an exhaust that loud in public. The only reason to have an exhaust that loud is to draw attention to yourself. He drew the attention of the police and rightly so.
During my career as a police officer I had no hesitation writing loud exhaust tickets. Without exaggeration I wrote hundreds of loud exhaust tickets to motorcyclists, particularly Harley riders. Never had a problem getting convictions in court.
Common man there are plenty of people out there that cop could have wrote. I have never heard of a Leo writing someone for loud exhaust unless he was stopped for another reason and decided to cut him a break.