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Old 09-17-2009, 11:20 PM   #435
AdamCzap
 
Drives: 18 zl1, 17 sierra denali
Join Date: Sep 2009
Location: Detroit Area
Posts: 471
The mechanic at the GM dealership in Novi, MI today told me that the car's computer recalibrates itself every 7 miles to know what kind of fuel it's using and switch to the appropriate timings.

ur wastin ur timez.
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