Thought I’d update everyone!! I finally got to tow heavy with my truck since trans. I am very happy it felt great every shift. I pulled my 30’ gooseneck ruffly 6000# with a 98 Chevy extended cab 4x4 on it so I figured it around 12,000 pounds total. It was 250 north of where I live 200 miles of 4 lane running 70mph never shifted down for any hills temps for trans never went over 174 egt temps 900 max 1080 on one hill 150 hp tune. I also got 12.4 mpg loaded and 13.2empty no wind headed north but a 10mph wind when coming home just trailer. From all research I’ve read everyone always saying watch trans temps and egt temps that is why I left the tune alone.
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