U7164 120 HP program - 2008 F250 6.4L

[pic350ford]

One other problem that i have noticed. If your on the highway running 65 mph or so lol If you get on it ,and then let off the petal,and get back on quickly the engine will stumble for a bit and puff white smoke out the pipe, then it will take back off again. its kinda weird .

[ShauneSieben]

I am experiencing the same as pic350.... Although I have not run the 160 tune... don't need it. Hesitation right to almost half throttle then ka-pow. This is on the 50 and 80 settings. The only tune that runs good it the tow tune, smooth all the way through. I do not beleive that there is an issue with the truck as when back to stock it runs awsome, infact stronger than with either of the tunes.... As far mileage, since it has warmed up outside here i have done comparisons between tunes and stock and i am getting the same numbers all around as stock. It seemed better when it was cold outside, but now once nicer here, tunes are not very impressive for power or mileage. Now like pic350, i am too wondering if we are going to see refinements otherwise this may have been a waste of 500 bucks....