I got one from very Fast Eddy after bike got stoopit on me. Slapped it in, and had to relearn how to shift it. The rpm's have dropped a few and i now ride in a lower gear in lower speed zones. I was hoping for an uptick in mpg, but don't see one. Possibly because i am running in a lower gear more. I was always looking for another gear when i first bought this, now i am getting there too soon. Wasn't a real fan of the highway after getting used to the high winding of these machines, but now ima strolling along at 60 taking it to 65 in fourth gear. Havta be more cognizant of speed zones too. First run on the highway, i felt a little hesitation and thought she may break down again. Anyone experience that? Then i thought the TTP is prolly a computer chip and was just programming. Idle seems a little higher. I have the ai gone, uni filter, nology coils, and dunstall pipes. Anyone running the TTP with a 19 tooth sprocket? Gotta be real low rpm on the highway. Impressed with the way she runs now on the 18 tooth.