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If your car has the NPP exhaust system it will take maybe 5 minutes to install the M2W controller. Pulling the fuse will open the flaps on the two in-board mufflers, but they will always be open and listening to your car's radio will be hampered whenever you are in the exhaust "drone zone". I am guessing a solenoid controls the vacuum system that operates the NPP system so the M2W is merely turning that solenoid on or off.