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Old 05-29-2020, 11:54 AM   #2
JerzyDog
 
Drives: 2013 ZL1 vert
Join Date: Jul 2013
Location: New Jersey, USA
Posts: 3
You already have exhaust cutouts from the factory. To make them manual you just have to install a controller. Search this forum (there are a lot of posts on the subject)or watch this video...…. https://youtu.be/R1WfpAotXIY
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