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Type: Posts; User: Gforcejunkie

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    Thank you.

    Thank you.
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    Down shift/up shift 2005 5.9 Auto

    I recently did a new tune to my 2005 5.9 Auto and for the first 50-60 miles, the truck would refuse to down shift to 3rd when accelerating up hill with 90% or more throttle position. After about 60...
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    Beta version Vin issue

    This is my first time tuning with hptuners and I noticed that the Beta version deletes one of my VIN characters where as the regular version does not. I almost missed this so if anyone is using beta...
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