I posted this a day ago on the Diesel page, but there doesn't seem to be as much traffic over there.... Anyway... I just bought a new tow rig, an '03 2500HD D-max w/Allison (2wd). I'm looking for a good power add-on, a programmer to be exact. I don't want an insane amount of power or anything, just a safe, reliable performance enhancer. Can you guys recommend one? ...or maybe let me know which ones I should stay away from. I’d like the ability to change programs on the fly, but if those units aren’t recommended then I’ll be fine with the other flash programmers if they are better. Also… I just slapped on a set of 285/75/16 BFG A/Ts (33” tall). They rub a little sometimes on the front valance… I've already trimmed it back a little but, is there a good way to lift the front end of the HD 2wd’s an inch or two?