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Old 06-13-2014, 01:21 PM   #3
Alexzl1
 
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Drives: 2013 zl1 A6 summit white
Join Date: Sep 2013
Location: Qc canada
Posts: 50
It's suposed to be 5" . I still have stock size tb but the car have cam , longtube and pulley upgrade . Gonna switch the airaid ( with maf retouched ) to see difference . Same tune , temp , timing , etc .
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