CALIBRATION UPDATE - HPTUNERS
If you need a tune update then this is what you will need.
When you install larger injectors, turbo or pumps then the truck will need to be recalibrated to get the most out of it. Note all the changes you have made and what tune updates you require in the truck mod list.
If you need to revert back to stock tune just make a note in the mods list that you just want a copy of your stock file.