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Old 02-25-2020, 11:51 AM   #16
geaux_tigerss
 
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Drives: 2019 GMC Sierra 1500 AT4
Join Date: Nov 2011
Location: Orange, TX
Posts: 740
Quote:
Originally Posted by subgraphic View Post
Any drone with this setup?
Absolutely none with the valves closed. Sounds like my wife's tahoe.

Valves open you can hear it some at highway speed (70-80 mph), but it isn't what I would call drone. Less than my gen V camaro had with long tubes and corsa catback. Can still hold a conversation, talk on bluetooth, listen to podcasts, etc. I run valves open 95% of the time (really just close them in my neighborhood, if i see LEO...)

NPP is actually kind of amazing.
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2019 GMC Sierra 1500 AT4
Summit White
6" Lift, 37x13.50R24's
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