when i went to court i told the judge that i didnt know it was illegal and if its so illegal in the state of va why can they sell them, just like radar detectors are illegal and they are not sold here. I asked the cop when we were in the court room , that dont you have to have the exact make and modle with factory specs next to mine with a db reader and he said no. He pulled me over becasue he said my car was louder then the ones around me. I said so if i was near a mustang or camero or harley that i would have been ok becasue the would have been louder. The judge nodded and said im letting you off but im not saying its illegal and asked me if i was taking it off, i told him if need be and just got a silencer and when i saw a cop i driffed pst him.