Best I ever got with my bike was 46mpg. Since I pulled my carbs and had to tear them down last summer I haven't gotten better than 43. Think it's still a bit rich though. if I ht the highway and run 80+ the mileage goes down to about 35.

I'm 6' and over 260 if that matters. (think it does cause that's two people for some of you. lol)