Ok! I have the 2Bros exhaust with their computer and UNI filter with a twist throttle and have notice that I do better gas mileage than my friend's stock bike and I ride pretty hard and she rides hard to but also likes to go into circles, trying to catch her tail,lmao. I'm very happy that my bike is sucking less gas then hers but you would have thought with my big 3, I be the one consuming the gas? Weird!! but Happy.:yay: