I have a 2005 F-250 6.0L and one of my friends has a 2005 F-350 6.0L. Both have same rear end gears and tire sizes. We both installed the Edge programmer. His truck has quicker fuel response and firmer shifts. His smokes alot and mine hardly at all. Mine has 44,000 and his has around 85,000. we switched our programmers out and still the same results. He said he did have his computer flashed about 6 months ago and to my knowledge mine has never been. Could this be the reason for the better running. Didnt know if he had gotten any new updates with the flash

 

Not to bash, but edge is junk. if you want some real power I would get an SCT programmer with custom tunes on it. That edge will eat your tranny. What are your other mods i.e. intake, exhaust..?