I've had the adrenaline now for a few months. Just checked my mileage on the 01 setting for most of the day. Had to put it on 04 for a bit because it is so much more fun to drive. It got 19.2 with 90 miles on the tank. Got excited because I found diesel for 4.50 instead of the usual 5.00. The last time I checked, pre-adrenaline, it got about 17 mpg. I am super happy with this tuner. Layed a 100+ foot track a week ago on setting 10. I think it might be time to look into tranny mods. The trucks future will bring a new turbo (super b special I think) and a set of around 100hp injectors. First comes the tranny mods as it is a necessary tool in running my construction business. Kudos to qzilla for such a super fun add on to a great truck!