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Thread: Allison tuning

  1. 01-17-2021 #1
    latemodel68
    latemodel68 is offline
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    Allison tuning

    I have an Allison 1000 in a 2002 Silverado with an 8.1. Can Hp Tuners change the shift points yet? Trying to delay the 4 to 3 downshift.
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  2. 03-28-2021 #2
    ls408s-10
    ls408s-10 is offline
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    yes hp tuners can change your shift point. i have a 2001 Allison with the 8.1 and have changed a lot of my transmission calibrations.
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