I always wanted to try these things and just never made the final step to order them.... until today. I'll give 'em a try and use my stock mufflers in combo with the Torq Loopz. I'm not really looking or expecting any performance gains even though this mod is advertised as doing so. And would I really notice a 3 to 5% gain... I dunno. I want to try something different just because. Heck, I might even try an auto tire on the rear! Isn't that a crazy idea???