i´ve got 1200 miles on, i´m 6´ 180Lbs. I run hard, city and highway. i´m seeing 55-60 MPG, usually 56-58, single or 2 up. My guess is... it simply depends how you tune the carbs the more power the less MPG´s you get. it´s over-due for the valve adjustment. i´ll report back when i see how that changes things.