put on a 3" downpipe that feeds a straight through muffler (glasspack, magnaflow, dynomax ultraflow welded etc) with a boost actuated cutout, with the normally open side fed to the stock exhaust. put a switch in the dash that controls a solenoid to enable the boost actuated cutout to dump past the loud muffler.... the switch having 2 positions, one labeled "Joy" and the other labeled "Mutant Sasquatch that likes loud things".... problem solved/solution engaged!
Brian
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oh.... the switch that enables the cutout may need to be tied into an chip address selector that enables a second cal that is tuned to the open exhaust....
Brian