Happens to me too. Feels like it gradually looses speed until it hits about 45 then maintains that steady. Feels like it won't downshift and get the rpm's back up pulling the hill. I find myself letting up and stomping on the pedal expecting it to downshift and pick up power but it won't. I am planning a trip with Spartan tunning this coming holiday and will see if there is improvement.
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2008 F450 Kings Ranch - Black/Gold Dually-Fully Loaded, Spartan Phalanx Tuner-Fully Loaded, AFE Stage II PG-7, 160 Gallons of Fuel, Big Woody!
