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I have experience, with the diableo, superchips, sct, PPE, and Hypertech on my 6.0...I can say this. The diablo was the worst of them all. Mileage stayed the same, moderate power increase, tranny slipped, and just shifted funny. Superchips gave a good amount of power, even with my 38"s I was able to keep my tires spinning for a few seconds from a stop, mileage increase of about 1-1.5 mpg. Tranny didnt feel much different than stock though. PPE, gave loads of power, but the tranny slipped on all but the lowest power settings. Hypertech, (hyperpac) is great, I love it, power is a bit less than the SCT, shifting feels fine, and I feel like the speedo calibration is more accurate than the SCT. For overall power and tranny life, the SCT wins hands down, its custom tunings will blow away any of the canned tunes from any other company. For those of you with canned tunes, that dont think custom tunes could be that much better: Your wrong.
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2006 F250 cc/sb sct, studs egr delete, 100 shot injectors, fass fuel pump, twins, rough country 4-link 8" Lift, 38"x15.5" Dick Cepeks, 20x12 Rockstars, 4" Dual Exhaust, Ranch hand bumpers Front & Rear
2002 F350 XL RC/LB Pro Comp 6.5" Lift, 37"x13.5" SuperSwamper M16s, Stage II's, GTP38 turbo, DP Tuner, AFE intake, 5" exhaust, JW Slush Box, AIH Delete, CCV Mod, Zoodad mod, 5.6k mod, FPR Shim, ATS Flex Plate, ATS Torque Converter, AirDog FP-150, Fluidampr.
2006 Ram 2500 QC/SB Smarty, 5" straight pipe, edge, Leveling kit, 35x13.5" mickey ATZs
2006 International CXT DT466 300 hp 860 tq Diablo powerpuck, 6" straight pipe into 7" single stack
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