I gotta say, I am more impressed with the PC 5 everyday. I was a little indifferent at first; I bought it with a pre-loaded map because no one had a map for my exact set-up. It ran well but had some decel pop and the occasional pop between shifts. I was a little leery of trying to make adjustments myself, but after talking with FuelMoto, decided to venture into the world of self tuning. I am not sure what I was afraid of, but the PC5 is really simple to adjust. I have adjusted a few of the throttle position #'s at different RPM's and viola!! no more popping and it sounds pretty mean on hard decel...almost NASCARish! Does this qualify me to be a "tuner"?