Pushed it at 70mph whole way down and got 9.3mpg. Did speed limit on the way home, grabbed 5th and did 60 on long pulls and got 10.7mpg.
Those numbers were about what I was getting with the stock tune or POS Edge, but with a trailer a foot shorter and 4000lb less gross combined... and 6th was useless in those days on anything but rolling hills.
Smarty Jr on high setting and I had all the power I needed anywhere above 1800rpm, EGTs rarely got over 1150 and were easy to control. Phone call to Smarty Resource said run it on the high setting if you have a clutch that can take it and avoid sustained EGTs over 1200.
Super please, feels like a real truck. Handled weight with no load bars without issue. Trailer was great too, able to keep Jeep inside during rain and still have room to live or house people for shelter. Plumbing install this week.