None of us bought Bobbers for their fuel mileage but I was curious as to what the new map would do. I am just starting to ride the bike again after the winter layup. I did 117 miles and put in 2.7 gallons. It was mostly back roads at 50-60 MPH no highway. This maybe a little less then usual but I usually have a little highway in the mix. I do not think there is much of a difference.