tuner
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it will allow for tire size changes, different fuels, and gearing changes as well as fixing your speedometer. -- there is actually quite a bit you can do, it scares me how much I can modify stuff, lol
I went with 5 Star Tuning, as MPT doesn't do pre-04 (my truck is a 2001)
I have an SCT X4
I went with 5 Star Tuning, as MPT doesn't do pre-04 (my truck is a 2001)
I have an SCT X4
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