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Finally got to haul our 5th wheel to the campsite. I towed in Heavy Tow, which is approx. 60-80 hp. and egt's never got above 1100. I used to have a TS chip and I would have to let off the throttle on some of the hills because egt's approached 1400*. I am 110% satisfied with Tony Wildman tunes! Our camper isn't that heave 8500 empty and hills aren't that big, but my truck pulls alot better now than before. I think the only other mod that I have done to the truck since the last time I pulled is the CCK.