I have had my Race Ultra on since 4/2017 and just leave it on the 120hp tune unless I put a big load on it. Get 18.5 in summer and 16.5 right now under 15* temp. Was getting 14 before the delete. The 10-12 trucks just will not do better, I have talked with several tuners and the BEST of them, Ray. I did try the 60hp and my mpg was close to 17 so I leave it at the 120hp. I do not want to run it any higher till I get a stud kit from Ray. By the way, I have saved enough on fuel to pay for the tuner and will be ordering the studs soon.

Hope your trip went well @Bobbywalker083