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1,600 miles and first engine upgrade. OMG!
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04-05-2017, 11:37 AM
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Mishaman68
Drives: 2017 ZL1 M6
Join Date: Mar 2014
Location: Dallas
Posts: 203
In my haste posting this last night I put 770. It's 720.
What was done.
New upper and lower pulley from Lingenfelter.
Headers
Performance tune.
Work done by 21st Century Muscle Cars here in the Dallas area.
Mishaman68
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