Here is a couple pics of 2 recent heavy towing trips from Denver to my home, all done in 40HP tow tune with no issues with EGT's or tranny temps, shifts etc
first 2 are about 16K lb trailer weight and the last one is 21K lb trailer weight.
6 pallets of Retaining wall block
4 pallets of flagstone, a diesel generator and 3 wheelchair lifts... and a pool table base...
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DJ Phoenix (my modded) Hi-1200/240Tow/75FS/80DD/100/140SS +Minotaur
ASE Master Auto Technician
2001 Ford Excursion 7.3 4x4
Projects. 1970's Hustler and Max II Amphibious ATV's