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Old 06-29-2013, 08:56 PM   #2
TripleBlkZL1
 
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Drives: 18 ZL1 A10 & 18 2500HD Duramax
Join Date: Oct 2012
Location: Chicago, IL
Posts: 733
Sounds like your running too rich. Does it happen during low or high rpm's? Fyi you should be driving when your motor is cold.
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