Hey guys, when switching to a new ECM base tune, do I need to have the 3 prong diagnostic cable plugged in? I'm using the MM3 with Ray's tunes.
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Hey guys, when switching to a new ECM base tune, do I need to have the 3 prong diagnostic cable plugged in? I'm using the MM3 with Ray's tunes.
2017 Ram 2500 Laramie, Taken care of by DRD, Carli Leveling Kit, RBP 94r 20x9 Wheels, and 35" Nitto Ridge Grapplers
1997 Dodge Ram 2500 Laramie, too many to list...
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