Holy cow guys..... I wasnt happy with my truck when i got 15mpg in town..... I feel sorry for yall....
Im still learning this tuning thing, but so far ive gotten my mileage back to bout 21 on the interstate at 70MPH... And i have 29" tire with 3.42s...


Could you take the front drive shaft out and see what happens from there???
heck thats what i would do..

 

i don't think i can do that with mine. it would probably mess up my t-case.

so what are you all doing to your tun for the trans? what rpm are you going into lock up in over drive? what are your speed vs. throttle%'s for unlock? at what point does the tcc start to slip as in slow speed and high load?