Agree that the value is in the shift points. Ford has some pretty good engineers and if more power and better economy were available in a tune I expect they’d have tapped it. I traded a 6 speed class A for an older 5 speed and was amazed at how much less pleasing to drive it was. It shifted down at the slightest hill and too often skipped 4th gear and went all the way down to third. Tow/haul mode made it worse. The 5 Star Tune helped quite a lot and I was glad I bought it for the shift points only. But the thing isn’t magic. On big hills it still had to shift down to third and in those conditions the benefit was only marginal. Where it shined was in the ordinary world of small and modest hills. I have since traded yet again on a 6 speed coach and I’m happy with its performance and won’t be changing it. Had I kept the older machine I was considering asking 5 Star to put everything back to stock except the shift points. I am convinced that the “seat of the pants” impression of more power comes from making the throttle response to the position of the pedal more sensitive.
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