Mild2Wild
Team Owner
Joined: Sep 2005
Posts: 20,352
Likes: 568
From: Ventura County, Calif
You can retrofit NPP mufflers (2009 - 2013) and add one of the NPP in a Box kits for the vacuum control and M2W, then you'll have a manual control NPP but not factory type computer controlled NPP.
Le Mans Master
Joined: Oct 2014
Posts: 8,672
Likes: 2,726
From: Atlanta GA
Did not like the fact that my Corvette was quieter than my E350
I run the NPP's open 90% of the time
Dave
Last edited by Dcasole; Dec 30, 2015 at 10:03 PM.
Drifting
Joined: Mar 2013
Posts: 1,705
Likes: 539
From: Hampton VA
I have the npp on my 08, I pulled the fuse for it which keeps it open all the time. The drone created from about 45 to 60 was unbearable for me and I like to hear the sound but not that. My last Vette a 96 LT4 had long tubes and Corsa and was loud but it didnt drone and the sound was perfect
