Thread: 5.3 Rev and shift points for 2003
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Old 07-01-2004, 07:50 AM   #1
Rupdike
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Join Date: Jul 2004
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Lightbulb 5.3 Rev and shift points for 2003
Could someone please help me out I have just bought a new Hypertech power programmer for my 2003 Silverado with a 5.3 motor, I am new at this so i am looking for some tip on what to do to increase my HP and run a better.
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