Activate NPP w/o the 'Fuse Box' mild to wild switch
11-16-2018, 07:38 PM
#1
Drifting
Thread Starter
Activate NPP w/o the 'Fuse Box' mild to wild switch
Is there any way to activate the NPP valves and open up the exhaust with out the fuse box based "Mild to Wild" switch? I do not like the idea of tripping a fuse to open the values; I am sure there must be side effects to doing so.
11-16-2018, 07:54 PM
#2
Race Director
Just pull fuse # 42 in fuse box.
11-16-2018, 07:57 PM
#3
Drifting
Thread Starter
When you pull fuse 42 apparently there are side effects.
11-16-2018, 08:20 PM
#5
Race Director
No, at least none I've ever seen substantiated. My GS fuse 42 has been out since new as have many others without any ill effects.
You seem very skeptical, perhaps best for you leave your NPP operational as from factory.
You seem very skeptical, perhaps best for you leave your NPP operational as from factory.
11-16-2018, 08:47 PM
#6
Burning Brakes
If you aren't willing to deal with the (very unlikely) potential consequences of pulling the fuse or installing M2W, maybe it's best you leave your Vette alone. You'll sleep better at night.
11-16-2018, 09:31 PM
#7
Team Owner
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St. Jude Donor '11-'12-'13, '16-'17-'18
11-16-2018, 09:40 PM
#8
Race Director
11-17-2018, 06:26 AM
#10
Drifting
Thread Starter
11-17-2018, 09:38 AM
#11
Race Director
I stated you were skeptical as you obviously are and gave you good advice IMO. I can see you staying up at night worrying what damage the M to W is doing to your car, even though there's nothing to worry about.
That's interesting and I will make a mental note.
I wonder why the fuse/fuse box configuration changed from the earlier model years as there's not really a lot of changes to the 2019s.
11-17-2018, 10:22 AM
#12
Drifting
Thread Starter
Kevin, your "don't worry about it because I said so" answer hasn't answered my question at all. I asked a question, you think the question isn't valid, great; you are entitled to your perspective and I respect your right to your opinion. Perhaps you could respect my right to ask a question? Other sources disagree with you; and you very well may be right, I don't know, that is why I asked the question. I find it very hard to believe that the car is engineered to ignore a simulated blown fuse; the electronic systems are very complicated an interrelated.
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SlasherMcGee (11-18-2018)
11-17-2018, 11:28 AM
#13
Melting Slicks
When picking our '17 up at the Museum, the guide asked if we wanted the NPP valves open ALL the time. So he got somewhere on the info screen and programmed them to be open all the time when in SPORT mode, which is where we leave it. Just now scrolling thru my digital manual, I don't see a written guide on how he did it or what pull down menu was used. But I know the valves have been permanently open since we got the car. Try looking thru the driving mode menus. That way there will be no issue with pulling a fuse at least if you leave it in sport or track mode.
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faster68 (11-17-2018)
11-17-2018, 12:00 PM
#14
Drifting
Thread Starter
Thanks, I'll look into finding the setting.
11-17-2018, 12:01 PM
#15
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St. Jude Donor '11-'12-'13, '16-'17-'18
When picking our '17 up at the Museum, the guide asked if we wanted the NPP valves open ALL the time. So he got somewhere on the info screen and programmed them to be open all the time when in SPORT mode, which is where we leave it. Just now scrolling thru my digital manual, I don't see a written guide on how he did it or what pull down menu was used. But I know the valves have been permanently open since we got the car. Try looking thru the driving mode menus. That way there will be no issue with pulling a fuse at least if you leave it in sport or track mode.
11-17-2018, 12:09 PM
#16
Racer
Theres no doubt that NPP on C7 was engineered to cater to the enthusiast. Fuse in, car complies with whatever regulations. Pull the fuse and it sounds awesome all the time with absolutely no downside. Thanks GM for designing this right.
11-17-2018, 12:09 PM
#17
Drifting
Thread Starter
Only thing that I could find was the Engine Management Setting, but Ken is right, from that setting the value are only open at certain times. Seems like jdsaengine was talking about another setting though... and the hunt continues.
11-17-2018, 12:10 PM
#18
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Perhaps you can tell us what adverse effects pulling the fuse or M2W is supposed to cause? A little too vague.
The settings in the menu will open them more often, but they will not stay open the same as using the fuse methods.
I've had M2W on my C6, and both C7's with absolutely no issues. About 50k miles combined between the cars.
The settings in the menu will open them more often, but they will not stay open the same as using the fuse methods.
I've had M2W on my C6, and both C7's with absolutely no issues. About 50k miles combined between the cars.
11-17-2018, 12:13 PM
#19
Moderator
Kevin, your "don't worry about it because I said so" answer hasn't answered my question at all. I asked a question, you think the question isn't valid, great; you are entitled to your perspective and I respect your right to your opinion. Perhaps you could respect my right to ask a question? Other sources disagree with you; and you very well may be right, I don't know, that is why I asked the question. I find it very hard to believe that the car is engineered to ignore a simulated blown fuse; the electronic systems are very complicated an interrelated.
Even if you set the Exhaust to "Track", the valves are NOT open all the time. Pulling the fuse WILL have the valves always open.
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green2000 (11-18-2018)
11-17-2018, 12:32 PM
#20
Drifting
Thread Starter
Perhaps you can tell us what adverse effects pulling the fuse or M2W is supposed to cause? A little too vague.
The settings in the menu will open them more often, but they will not stay open the same as using the fuse methods.
I've had M2W on my C6, and both C7's with absolutely no issues. About 50k miles combined between the cars.
The settings in the menu will open them more often, but they will not stay open the same as using the fuse methods.
I've had M2W on my C6, and both C7's with absolutely no issues. About 50k miles combined between the cars.
I talked to a guy at a car show who said that he pulled the fuse and then had a bunch of error codes when he brought the car into the dealer on a diagnostic report. From a pure principles perspective I'm hesitant to mess with a fuse; I'd rather cut the power on a wire that I know 100% is only running to the NPP valve. I understand that many people have done it, I'd like to do it too but before I risk harming a car that I have put a lot of money into I wanted to do a little due diligence first.
Last edited by faster68; 11-17-2018 at 12:38 PM.