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I want better fuel mileage at slower speeds. Working on a large military base. Speed limit, 40 MPH. As we all know the locker hits at 50. I have used the cruise control, once the tranmission locks in high gear, to slow down my speed 48 - 47 MPH, slower, it shifts down. The MPs on base dislike my speed ($). Can a programer (like Hyperteck) reset my stock lock up point to a lower speed. Before hand, stock, empty bed, no passengers, fuel filter new, air filter new, stock tire, 80 psi in the tires, dino oil, no comments on lugging (no grades / hills involved), 30k miles, 4X4, no off roading, inter state driving 65 MPH (20- 22 MPG), new wiper blades, Libra, long walks on the beach.
Thanks in advance.
 

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I beleive that needs to be done in the TCM which they are still working on cracking. Welcome to the site.
 
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