Driving Mode/Exhaust
Team Owner
Joined: Oct 2004
Posts: 25,583
Likes: 16,939
No, all C7s w/ the NPP system have valves closing at various times even in track mode to comply with federal noise regulations, per an "Ask Tadge" answer posted here.
The only way to keep them open all the time is to pull the fuse, or install a Mild-to-Wild module, which simply controls power to the fuse with the press of a button.
The only way to keep them open all the time is to pull the fuse, or install a Mild-to-Wild module, which simply controls power to the fuse with the press of a button.
Last edited by Foosh; Aug 8, 2017 at 10:30 AM.
Drifting
Joined: Jul 2016
Posts: 1,481
Likes: 393
From: Virginia Beach Virginia
The open NPP exhaust is not obnoxiously loud anyway. Simple to pull 42 fuse and store it in a spare slot. Still quiet compared to aftermarket but noticeably louder than normal. No biggie just a little extra for those who like it loud. I guess Corvette could pipe in the sound like some other manufacturers but that is just weird.
Team Owner
Joined: Nov 2007
Posts: 45,230
Likes: 8,483
From: Rochester, NY
The open NPP exhaust is not obnoxiously loud anyway. Simple to pull 42 fuse and store it in a spare slot. Still quiet compared to aftermarket but noticeably louder than normal. No biggie just a little extra for those who like it loud. I guess Corvette could pipe in the sound like some other manufacturers but that is just weird.
Team Owner
Joined: Oct 2004
Posts: 25,583
Likes: 16,939
Agree, that's what I did. Although I keep my M2W on the open setting (fused pulled) most of the time, there is a noticeable drone in 6-7 (7MT) at legal highway speeds with the fuse pulled. The M2W is a convenient way of eliminating that drone without pulling over and reinstalling the fuse.
Last edited by Foosh; Aug 8, 2017 at 04:01 PM.
Drifting
Joined: Jun 2007
Posts: 1,425
Likes: 238
From: Macomb MI
If you're interested in the DIY approach to the M2W:
https://www.corvetteforum.com/forums...ob-how-to.html
On page 4 there's a post on where to find a ground in the fuse box, so the ground wire doesn't have to stick out...everything fits inside the fuse box.
I've made this contraption for my car, and it's GREAT! I've actually been meaning to go back and move my ground inside, so this thread has reminded me.
https://www.corvetteforum.com/forums...post1592266542
https://www.corvetteforum.com/forums...ob-how-to.html
On page 4 there's a post on where to find a ground in the fuse box, so the ground wire doesn't have to stick out...everything fits inside the fuse box.
I've made this contraption for my car, and it's GREAT! I've actually been meaning to go back and move my ground inside, so this thread has reminded me.
https://www.corvetteforum.com/forums...post1592266542
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Drifting
Joined: Jun 2007
Posts: 1,425
Likes: 238
From: Macomb MI
Sure it's "easier" (and free), but you lose all control of the valves without putting the fuse back in.
I leave the Engine Sound Management in Stealth, so when I need to talk on the phone (or leaving at 5am) I push my remote button and all is instantly quiet. All other times, V8 glory (I have V4 disabled).
The DIY remote method is $25 in parts. WELL worth it. And this is from the OP of the NPP fuse pull thread in Tech...
I leave the Engine Sound Management in Stealth, so when I need to talk on the phone (or leaving at 5am) I push my remote button and all is instantly quiet. All other times, V8 glory (I have V4 disabled).
The DIY remote method is $25 in parts. WELL worth it. And this is from the OP of the NPP fuse pull thread in Tech...
Last edited by xp800; Aug 8, 2017 at 11:18 PM.
Instructor
Joined: Jun 2017
Posts: 115
Likes: 19
From: Toronto Ontario
Under your customisation menu / sound management, turn off the automatic sound enhancement and it will be set to full open on all driving modes.
Last edited by i3kc; Aug 9, 2017 at 02:46 PM.
Racer
Joined: Mar 2016
Posts: 365
Likes: 54
From: Huntsville Tx
Thread Starter
Drifting
Joined: May 2002
Posts: 1,546
Likes: 282
From: Back in Nebraska
Instructor
Joined: Jun 2017
Posts: 115
Likes: 19
From: Toronto Ontario
Oh yeah, my bad. I forgot that that newer ones allow require/allow you to select Stealth, Tour, Sport or Track tones if not on Automatic (No off option). When I first posted, I took a internet picture and it's been a while since I went into the settings menu. Attached is a picture of the exhaust tone options on my 2017.
Last edited by i3kc; Aug 9, 2017 at 04:40 PM.
Drifting
Joined: Aug 2002
Posts: 1,519
Likes: 431
From: MI
No C7 has full open all the time. As stated above the only way to have them fully open is to create an open circuit for the valve control. This can be done by removing the fuse or by the use of a mild to wild system.
The system is programed to close under certain conditions in order to pass federal drive by noise standards.
The system is programed to close under certain conditions in order to pass federal drive by noise standards.
Burning Brakes
Joined: Jul 2008
Posts: 1,236
Likes: 270
From: Rattlesnake, FL
No, all C7s w/ the NPP system have valves closing at various times even in track mode to comply with federal noise regulations, per an "Ask Tadge" answer posted here.
The only way to keep them open all the time is to pull the fuse, or install a Mild-to-Wild module, which simply controls power to the fuse with the press of a button.
The only way to keep them open all the time is to pull the fuse, or install a Mild-to-Wild module, which simply controls power to the fuse with the press of a button.
As an additional note, on my 2017 Z06, when I pulled fuse #42 and the car went into V4 mode it sounded horrendous! If you are going to pull the fuse to have it open, especially if it is and A8 that will go into V4 mode regardless of driving setting, I would get the AFM V4 disabler. Only way to disable AFM in an A8 is to manual shift with the paddles. Lucky for me Callaway disables the AFM when they install the tune for their SC757 package. I also installed the Corsa x-pipe and sport exhaust so no more valves for me anyway.
Advanced
Joined: Jun 2017
Posts: 63
Likes: 25
From: PA
No C7 has full open all the time. As stated above the only way to have them fully open is to create an open circuit for the valve control. This can be done by removing the fuse or by the use of a mild to wild system.
The system is programed to close under certain conditions in order to pass federal drive by noise standards.
The system is programed to close under certain conditions in order to pass federal drive by noise standards.