chapter 90 section 16 of the MGL...No person shall operate a motor vehicle on any way which motor vehicle is equipped (1) with a muffler from which the baffle plates, screens or other original internal parts have been removed and not replaced; or (2) with an exhaust system which has been modified in a manner which will amplify or increase the noise emitted by the exhaust.....
altho with a camaro...i doubt anyone will care...mustangs have mad loud exhaust and i hear no complaints from them