Running a 2002 Deuce with Stage one air, SEII's slip-ons. I get 43 mpg in town and 53 mpg on the highway at 60 mph. Usually fill up when the gas gauge gets into the red which is 120 to 160 miles. Never went dry yet!
My reserve light comes on at about 150 miles which is when I fill up. I was also told not to trust the gas guage and someday I'll run it till it goes dry just to see how far I can go...I just havent got the nerve up to do it yet