So.... I had rather a poor experience with diablo. The intune put my 2005 Ram into limp mode. Ended up buying a Drewtech Mongoose and subscribing to TechAuthority for the weekend to reflash and get it back into service. Due to the mods I had also invested in, decided to try an upgrade to the Trinity. Result - ABS light, and just took it to the dealer to fix. Lost the stomach for it after that. I ran the Superchips canned tunes without any issue whatsoever for years prior. YMMV, but I would find a shop that is familiar with the programmers to help you, at least your first go round on the truck (even if you have used the units before on other cars). I never had much luck finding one in Phoenix area, but Texas might be better....