I have found that I get the best millage from 92 octane ( about a 3% price increase, 10% better milage). And I stay away from the brands that use ethnol.
When my bike was stock my MPG averaged 55 mpg.
Now with mod's average 50 MPG.
And I fill my tank after 175 miles. The last time I had 182 when I hit reserve, and 206.8 when I found a Exxon. Took 4.085 gals.
