I bought a hypertech program for my 97 f250 about ten years ago just sold that truck in nov. with the same program on it with zero problems. I towed too much with the truck frequently and never had a problem. I had the tune on the truck for aprox. 100k. I made a big diff. from stock( better drivebility, just more user friendly and more power). I know this is a little diff. but I also have a 99 f250 with a dp tuner
(stock, tow, 80 econo, 120 race, lope) and I cannot believe the difference. I have had his tunes since 50k and absolutely love them. I have towed heavy 18k a couple times with no problems (as long as I watch my egt's which I do have to back out of the throttle sometimes). I tend to believe that you get better tunes from the independent guys than with the major companies. The dp is very easy to use, one up button and one down button, anyone can use it.
99 F350 4X4 CC DRW LB 7.3 AUTO STRAIGHT PIPE, 4.10s,Tymar, Gauges, 02 turbo, tugger 2, racerx 6xtc,05 front end, dp tuner, 120 idm.
08 F250 PROJECT THEFT RECOVERY.