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Old 05-23-2013, 08:05 AM   #27
Drives: 2013ZL1
Join Date: Jul 2012
Location: Northern California
Posts: 94
Give it some time (couple of weeks) for the car to self adjust your fuel trims. This flat is normal for adding something which adds more air and creates a slightly different flow path over the MAF sensor. I felt the same right off idle low end flat spot and it corrected itself over time.
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