Join Date: Oct 2014
Location: Panama City, FL
Thanked 17 Times in 14 Posts
I installed a hypermax Econ tuner several years ago and it improved my mileage by 2-3 mpg both towing and solo. Two years ago I towed my 14,000 lb fifth wheel from Florida to Yellowstone and averaged 12.5 mpg. One 400 mile stretch I averaged 14 mpg. I went back to the stock tune when a Ford dealer said that my tuner was causing coolant to blow out the degas, but that didn't help the problem so I reinstalled the ECON.
Without the trailer I get 19 mpg in town and average about 22 mpg on the highway. I drive like an old lady, though. I usually don't go over 65 and use the cruise control.
2006 F-250 Superduty with 6.0 diesel