So if thats true why when I turned my 475 up to a 550 I gained .2mpgs? Better yet when I turned my 550 up to a 725 I gained .8mpgs? Its not like the animal world just cause all the horses are in the barn does not mean you are feeding them.
Bravo! Big power and a bad driver burns more fuel (& tires). If less is more then a 300hp semi should get 12mpg right?