When i run various tunes from dynojet or Fuel moto, it affects my fuel mileage when I fill up at the gas station ,economy tune might get 340 kilometers to the tank ,a performance tune might get me 260 kilometers to the tank. When I auto tune off of the fuel moto tune I like I get about 350 kilometers from a tank.Now if the factory tune was running lean and I only got about 300 kilometers from the stock tune is the bike running even leaner now.