Originally Posted by Modshack

I think with a Turbo it would sound good, but with Supercharging, probably just as obnoxious as the few guys here who have removed their rear mufflers and/or installed straight tips. Yuk.

The partial opening idea is worth thinking about and if an option with the QTP that would seal the deal. I spent a lot of time tailoring my NPP exhaust (the one with the on or off flapps) on my Corvette to achieve the best sound either closed or partially opened.