Originally Posted by MacLean

The Non-resonated would be louder, but how much louder that I could not tell you. I would suggest that you call Tony at F.I. and ask him what the differnce in sound is. You will get the same hp either way. My exhaust is already extremely loud, but the RHFC gives it a deeper sexier sound in lower RPM's & at a cold start. The higher RMP's would just be insane. I wanted to make the sound even more exotic/sexier.