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Old 03-19-2014, 02:15 AM   #14
REVVIC
 
Drives: 2014 Z51 Velocity Yellow
Join Date: Jun 2013
Location: Tacoma WA
Posts: 170
GB EB has it right. In settings the three exhaust sounds can be synched to tour, sport and track. Or "off" which opens all the valves all the time. You can see the back two valves in the two out board pipes. I run on off and love it.
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