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Old 09-21-2009, 02:36 PM   #22
matt55

 
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Drives: CTS-V
Join Date: Aug 2008
Location: Raleigh NC
Posts: 1,069
A local tuner told me the magic # is 88* any higher and the ecu pulls timing on a V8 , guess it about the same for the V6 .

I am going by that old rule 10 hp=1mph , so i curious what you find .
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10.8@130.8 610 whp, CAI, 2.5, E85, id850 on street tires.
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