I know lots of folks on this site don't like true duals; however, I absolutely love my SuperTrapp true duals w/ SuperTrapp slip-ons. The bike finally breaths! My exhaust note did get louder but it's not obnoxious and the mid-range acceleration gain was huge. I may have lost a little down low but I can still leave black marks w/ ease. Now I just need to decide if I'm going to go w/ a PC V or a Thundermax w/ Autotune.....and then heads/575 cams and on and on and on....it never stops! What an expensive hobby, I love it.