Tuner ?'s
#1
Tuner ?'s
I just bought a 05 GMC Duramax about three weeks ago best decision I've made. I was a Ford Diesel guy back before they put these junk 6.0 in them. I had a banks programmer/tuner in my ford but through research and trying with error banks doesnt seem to be the best programmer for a duramax. So my questions is what seems to be the best tuner for a duramax, I'm looking for better fuel mileage and more horsepower of course.
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