Originally Posted by M3maniac20
1) I am partially wrong on that. They have to have some sort of reason for following you-and in this case that would be the exhaust. But unless he had a decibel meter with him, how could he write the ticket for that unless he just automatically knows? But I don't know all of the details on this or have heard the exhaust myself to make any firm judgments.
The whole situation is rough.
A cop doesn't need probable cause, reasonable doubt, etc to follow you. He can follow you for whatever reason he wants.