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Old 08-07-2017, 12:08 AM   #2
STUNNAH
"BEASTM*DE"
 
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Drives: 2013 ZL1 Black
Join Date: Aug 2016
Location: Tennessee
Posts: 1,655
You can turn AFM off with the stock tune, you'll burn more fuel... You can do the same with a performance tune but you'll be wasting money on higher octane fuel with no noticeable gains...
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