Training Wheel Hero
Join Date: May 2011
Location: Long Beach, CA
Thanked 55 Times in 40 Posts
Feedback Score: 1 reviews
I can tell you for sure the full system is LOUD. I bought my bike with a full Yoshimura RS5 and I eventually had to put in the dB killer insert. Didn't want to be rude to my neighbors, especially as annoyed as I am by other people's loud ass cars and bikes.
The power and throttle response with the full system and fuel controller is fantastic, though. Now that I've experienced it I don't think I could go back to just a slip-on.. which is probably about the same in terms of volume without a dB killer vs the full system with a dB killer. The insert changed the character of the engine a bit, engine braking seems more abrupt. But it's not noticeably down on power.. probably only on the very top end.
The difference, by the way, is that the full system eliminates the catalytic converter.. which restricts exhaust flow and therefore power and sound. It does allow longer primary and secondary runs, but you could achieve most of the gains of a full system by simply cutting/gutting the cat.. and many folks do just that.