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Old 06-13-2016, 02:32 PM   #4
Zomies
 
Drives: 2018 Camaro 1SS & GSX-S1000
Join Date: Feb 2016
Location: MLT, WA
Posts: 76
If you port the cylinder heads you will need a tune. Even without a tune and just the port work you will lose your engine warranty.
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