I have a 2004 F250 with a 5.4L V8 with Airbags and a Superchip Kit installed. With the Superchip set for heavy towing my Outback 31KFW Fifth Wheel Toy Hauler pulls like a dream. Even when fully loaded (10.5K) I have had no problems. I have pulled non-stop from Atlanta -Dallas Tx 3 times with absolutely no issues. Even Atlanta-Bowling Green KY over the Mountains with no issues. Transmission Temps have never been exceeded even in the hottest weather. With the Superchip I'm getting 8 to 9 MPG when towing.
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