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Hyper Tech Program?? on a 2003
I have a 2003 Silverado 2500 4x4 6.0L
I have hypertech on it, and I was wondering if anyone knew a good program for the transmission shift points to get more MPG but not hurt my transmission in the process. Any ideas?? 2003 Silverado 2500 6" ProComp Lift on 35"s |
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