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04-17-2008, 03:07 PM #1
- Join Date
- Apr 2008
- Location
- Houston
- Posts
- 2
Black- 2003 Chevy Silverado
Hey, looking for help with my silverado 2003
Okay i have been using a Hypertech Power Programmer III on my 2003 Chevy Silverado 5.3 and i just can't get my tuning down on the Rev limit and shift points!! Was hoping i could get some help here. so please let me know something...
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