Just got back from vacation. Went to Colorado to ride Grizzly and Rhino in the mountains. I have the SCT with a couple of Cale's tunes in it and let me just say that if you haul anything, you should get Cale's 65hp tow tune. 40ft Victory Lane toyhauler weighs in at 15,500 loaded. Truck pulls like a freight train. Went over La Veta pass and Raton pass both ways and the truck never missed a beat. I also got 10.4 mpg over a 2300 mile trip.(hand calculated) The only problem we had was 75 degrees high/35 low up there and 105/88 here at home. My dad just bought an 08 stroke and it was eating him up that I was getting virtually the same fuel mileage as he was and I was pulling 2 1/2 times the weight. ( I was generally putting in 1/2 gallon more than he on a 32 or so gallon fill up.) Thanks Cale.