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I have listened to the Borla video with sound comparisons...even with good headphones, a recording of exhaust sound vs real life will def be different..99% of the time the NPP valves are open (running in track mode) but still would like the ability to close if i ever wanted to be quieter....
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2016 Black 2SS A8 NPP Sunroof - Tinted Windows - Black Chrome Wheels - Custom Striping - ASC Sideskirts/Splitter - GM Lowering Kit - Complete Sound System - DD LED Sidemarkers
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