Exhaust sound Sucks!!
02-16-2016, 12:40 PM
#24
Burning Brakes
With NPP closed it is too quiet and I don't like having m2w switch full open all the time. The collars limit how much the valve can close when switched to the closed position. They stay open about 1/4 way when closed and function normally otherwise.
02-16-2016, 10:24 PM
#26
Le Mans Master
Member Since: Sep 2014
Location: lake havasu city arizona
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Funny that you say that, I have an 09 LS3 with Kooks 1-7/8" headers and a catless x-pipe, along with the factory NPP. I actually think it's one of the best sounding exhausts on any car I have owned or driven. Mine is my DD, so I drive it a few hundred miles a week. I put a switch in the car that overrides the NPP by cutting the power to it. When I want it a little louder, I just flip the switch. Cost me like $10 for the switch and relay.
NSF