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Dec 14, 2016 | 08:43 PM

grammer

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5th Gear

Joined: Jun 2016

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From: London Ontario Canada

Graham

I was thinking of getting a mild to wild exhaust control for my 2012 Grand Sport Question Will it work on all Grand Sport Vettes and is there any harmful concerns using one Thanks

Dec 14, 2016 | 09:04 PM

4SUMERZ

Race Director

Joined: Sep 2009

Posts: 11,349

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From: Eastern

Quote:

Originally Posted by grammer

I was thinking of getting a mild to wild exhaust control for my 2012 Grand Sport Question Will it work on all Grand Sport Vettes and is there any harmful concerns using one Thanks

It will work only if you have the NPP exhaust, and it will cause no harm. It just basically bypasses the muffler when the valve is open, similar to the old style cutouts of yesteryear.
https://www.corvetteforum.com/forums...ally-work.html

Dec 14, 2016 | 09:16 PM

grammer

Thread Starter

5th Gear

Joined: Jun 2016

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From: London Ontario Canada

Quote:

Originally Posted by grammer

I was thinking of getting a mild to wild exhaust control for my 2012 Grand Sport Question Will it work on all Grand Sport Vettes and is there any harmful concerns using one Thanks

Is it true that all Grand Sport 2010 to 2013 have the NPP exhaust When I looked to purchase one it stated as if that was the case as it said for Grand Sports and basic vettes with the NPP exhaust

Dec 14, 2016 | 09:38 PM

NashvilleGrandSport

Melting Slicks

Joined: Jul 2015

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From: Nashville TN

My 2013 GS does not have it. I believe it was a standalone option.

Dec 14, 2016 | 09:43 PM

grammer

Thread Starter

5th Gear

Joined: Jun 2016

Posts: 5

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From: London Ontario Canada

Quote:

Originally Posted by grammer

Is it true that all Grand Sport 2010 to 2013 have the NPP exhaust When I looked to purchase one it stated as if that was the case as it said for Grand Sports and basic vettes with the NPP exhaust

How do I check to see if my Grand Sport has the NPP exhaust

Dec 14, 2016 | 10:00 PM

z06Don

Racer

Joined: Oct 2012

Posts: 379

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From: Winder GA

You will see a valve mechanism just after the muffler....or you can check your option list in your glove box

Dec 14, 2016 | 10:02 PM

Ron'sGS

Burning Brakes

Joined: Apr 2016

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From: Round Rock, TX

Quote:

Originally Posted by grammer

How do I check to see if my Grand Sport has the NPP exhaust

You will see what looks like valves just behind and top of the exhaust tips.

Dec 14, 2016 | 10:17 PM

Detroit1

Pro

Joined: Mar 2015

Posts: 514

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NPP Exhaust

Quote:

Originally Posted by grammer

Is it true that all Grand Sport 2010 to 2013 have the NPP exhaust When I looked to purchase one it stated as if that was the case as it said for Grand Sports and basic vettes with the NPP exhaust

It was an option on my 2011 3LT GS. Believe it was around $1300 option on sticker. I just picked up a Mild to Wild and installed it last week. Kind of fun , however there is a drone on highway if you leave it open.

If you dont have it spend your money on something like a Corsa. Much better overall sound in my opinion.

JB