my opinion the superchips is better then the diablo for a stock,cai, and exhaust jeep. if your customizing your engine more i'd get the diablosport for a custom tune.
the superchips also has tranmission adjustments that the diablo can't do.
2005 Jeep Grand Cherokee Limited 5.7L Hemi -- Black Ops CF Venom Hood and Headlight Covers, Mopar CAI, DS Predator Tuner, Catch Can, SRT8 Grill, SRT8 Front Bumper, SRT8 20" Rims, SRT8 Bilsteins Shocks, SRT8 Bwoodys springs, SRT8 Front and Rear Swaybars, SRT8 Roof Rack, SRT8 Pedals, 08 RER Mygig, Lockpick Adaptor, 6k HID LowBeams, LED Highbeams/Fog, LED Interior more to come
2011 Jeep Patriot Limited - Wife/Babymobile, LED Interior, Lockpick v4