I own a 2012 GS and the selling dealer installed a mild 2 wild switch to control the NPP. When starting the car its in the open position and I would prefer it to be closed so its quiet. I'm running headers, cam, etc. and the car is extremely loud when its in the open position. In consideration of my neighbors, I want the car quiet when it starts. How can the mild 2 wild be reinstalled in order to change this? When I depress the mild 2 wild remotes on button, it goes from open (wild) to close (mild). I assume the dealer installed it so it operates backwards??
Thanks

 

Mine always starts out open. I'm pretty sure GM set it up that way and my MTW controller doesn't change that. Sounds like you dealer installed it correctly.

I don't think you can change that with the MTW controller.

I think your only choice is to do like some here have done to physically alter the valve and only let it open part of the way.

 

The exhaust flaps are always open when the engine shuts down due to no vacuum in the lines to hold them closed.
They close just after start-up (w/o the M2W).

 

I'm with Jim. Mine is open on startup and then closes in seconds. I believe it's the vacuum pressure that closes the valves.

 

They always start in the open position until the vacuum builds up enough to close them which is only a matter of a few seconds.

 

Without the M2W, the exhaust would start in the open position and then close once the vacuum has built up.

With M2W, you need to hit the Remote button in order to close the exhaust, so you need to do this manually. Most likely you dealer setup the M2W in the zero battery drain mode.

There is also a mode which retains the setting when the car is turned off, but there is a battery drain. So, if you had the exhaust closed when you shut it off, it would work like in the first paragraph.

 

There are two ways to install the Mild to Wild. One is called the "No Drain" and one is the standard one. They both start with the flaps open, but with the standard installation the flaps close just after startup, just like stock NPP exhaust. The No Drain install starts with the flaps open and they remain open until you hit the button on Mild to Wild and return the system to stock and the flaps close again.

The difference is in the wiring.
You can se the standard wiring here: http://forums.corvetteforum.com/c6-c...oductions.html

Here is the No Drain wiring: http://forums.corvetteforum.com/c6-c...post1584705521

I initially did the no drain install, but I did not like the noise so I switched to the standard install. Now, after a brief second at startup, it stays quiet until I want it loud. I have not noticed any drain or ill effects on my battery. I imagine it might be an issue of the car sat garaged for weeks on end.

 

as others said there's no "issue" that's how it's designed to be

 

Can someone explain how the M2W causes battery drain when the car is off?

U.M.

 

Frankly, I don't know why anyone worries about the miniscule trickle current drain caused by the always active controller.

I've gone as much as 10 to 12 days, without using my 'vette, and it still starts instantly when I push that button.

I don't see it as an issue, unless the car is not used for months, and in that case there will be a tender connected to it anyway.

 

My M2W has been installed since early 2009 when the car was purchased and has set for up to 30 days without being started. I also have LED's installed throughout the interior and the LED map lights in the rear view mirror burn dimly even when the car is shut off. I just replaced the factory battery a couple weeks ago so it lasted a little more than 4.5 years.

U.M.

 

Well, contrary to what others have said, when first installed mine I went with the "drain" installation and it killed my battery a couple times. Changed to the "no drain" installation and problem went away. If you install the remote so it's easily accessible, just hit the green button immediately after the engine start button and it's goes to mild just like the "drain" install.

 

I'm curious, when you say it kills your battery. I've not heard of this happening before.

In what time frame? Two weeks? A month? More?

Also, some specs. on your 'vette...year?...body?

Thanks

 

I have my M2W set to close on startup, and have never had a battery issue. My car sits for a week or two sometimes and starts right up. You can set it to start open or closed, although both ways it will be open for a couple of seconds until vacuum builds.

 

I installed my M2W (w/foot switch) about a year ago. It has performed flawlessly and no drain issues even when mine sits for a two to three weeks.

 

Mine is an 09. Around two weeks inactive in the middle of winter.

 

Get the sunset orange creations controller. It remembers if they were open/closed when you shut the car off and starts in the same mode. Easy.

 

The NPP valves are run off vacuum so the intial start has them open then when vacuum is availble they close.

Also the M2W doesn't have the memory that some others do but costs less. Mines open all the time except if interstate crusing with top up for long periods. Otherwise top down, or up with windows down wide open....

 

Hmmm, wish I had an answer. I just called someone I know with an '09, and he's not having any battery problems either, and he installed his M2W following the same instructions I did.

Is it possible there's some other cause for your battery drain, and it's really not the M2W installation?

Are you still using the original OEM battery? Perhaps it's on it's last legs, and 2 weeks for cold winter weather, is enough to kill it. May not be the M2W at all???

 

Actually it happened when the car was new so battery is not the issue. Still have the same battery. Nothing changed except the M2W switch and no problems since.