On & OFF Switch for Exhaust???

2011 Nismo#91

Probably unless the had a special exception because it was a limited run, good luck getting one with out a legal division on hand. You are not allowed to have excess of 90db on a car's exhaust. Opening a cut out will do that easily and then some. No inspection station would let is pass either if they saw it.

39:3-70. Mufflers.

39:3-70. Every motor vehicle having a combustion motor shall at all times be equipped with a muffler in good working order and in constant operation to prevent excessive or unusual noise and no person shall use a muffler cut-out, bypass, or similar device upon a motor vehicle on a highway.