Thread: Pulley upgrade 5%
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Old 11-18-2015, 07:09 PM   #7
Holliss69
 
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Drives: 2013 ZL1 Coupe A6
Join Date: Nov 2014
Location: Arizona/NY
Posts: 108
... Nope but Spring brings 10% ... Headers ... injectors and a Tune .... they will be needed then.

(Rumor is that a 10% pulley is MAX that stock injectors can handle)
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5% Lower, Roto-Fab, MM CC - 2013 ZL1 A-6
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