Hey Mark, the mileage gain is probably from gearing her higher and not the Freak mods. When I went to the Freak I used 135 mains, 45 pilot and one needle shim. My prower improved with only a slight decrease in mileage. Once they go back to normal fuel formulas in spring I'll get to see what I can expect from here on out for gas consumtion. Been riding much with the weather we've been having?
Steve