yup, you ready correctly. Today my friend Jeremy with the WRX got pulled over by a MA state trooper and she told him that after market exhaust is illegal in Mass. What a bunch of BS. I didnt believe her at first until we looked it up.
Have a look see for yourself,
Chapter 90 Section 16
http://www.state.ma.us/legis/laws/mgl/90-16.htm
