For maybe 15 hp on pretty much only the top of the revs? I wouldn't really expect better mileage. Mileage is more in the wrist than fueling. These bikes are all over the place in mileage, carbs or FI.
"got no problem with keeping truly roadless areas as wild....
On the other hand, if it has been logged or mined and roads already exist,,
...then that land should be open for public use" (peterman)