I just bought a 2006 R6S that was used. It came with a two bro's slip on K&N air filter power commander usbIII 520 rear sprocket. Custom paint fender eliminator and flush mount directionals. I hear a lot of popping when I am decelerating and some fuel smell. I usually run the bike in the 7-8k rpm range. I am getting about 130 miles to a tank of gas Is it possible that the bike is not mapped correctly through the power commander?? or is this the milage that I should be getting?? Does the bike run more efficently at higher rpm's?? If the bike is not mapped correctly does any one have the correct map?