The fueling box summary is very helpful. At May MAdness I tried a EZ which made some codes as Edge said it would but I wanted to try it. It made the truck better but just increased the stock power curve a little. Gave it back and bought a TST Power Max CR. Major difference, in cab adjustments, more than a stock truck can handle. Ran it on the dyno at May Madness on power 6/7, and torque on 5. First run gave 424HP second gave 443HP. SOP feel, oh yeah! Ran it on 7 & 5 on the way back from the dyno and slipped the stock clutch, got to keep it down to 6/4 or lower till I upgrade the clutch.
On the way home with the slide in mounted at about 14,000 lbs, kept it on 3/3 worked like a champ. More than you ever need, but more is there when you want to play, if you have upgraded other stuff like the clutch, turbo and fuel system.