Dual exhaust mode valves

midas@bellnet · 07-31-2017, 08:47 AM

It is my understanding that the dual mode exhaust valve is to always be open when in track mode, can anyone confirm this?

Glen e · 07-31-2017, 08:52 AM

Quote:

Originally Posted by midas@bellnet

It is my understanding that the dual mode exhaust valve is to always be open when in track mode, can anyone confirm this?

Kinda....they still shut at interstate speeds...even in track....if you want them open 100% of the time, you need to pull a fuse. Search.........

pwells18 · 07-31-2017, 09:11 AM

Glen is correct. I pulled the fuse more than a month ago, and am pleased to report, I havent stopped giggling since.

ninetres · 07-31-2017, 09:16 AM

I noticed zero difference after pulling fuse, even at highway cruise. I'm the outcast I guess.

zryan · 07-31-2017, 09:25 AM

Why do they close at interstate speeds? Even on the track?

Ray_Dogg · 07-31-2017, 09:34 AM

I think pulling the fuse has made changes at more than just interstate speeds.

Since pulling the fuse there is actually crackling and popping occuring in track mode where before I didn't have this with the fuse in. You can sit in park and gas up to 2000rpm and release the pedal, crackle pop. Do a semi hard acceleration and let off the gas around 32mph, crackle pop. It's a major sound improvement imo.

Of course if you have the windows up all the time you aren't really gonna hear much of anything. Folding the back seat down helps a little with this. They really went all out on keeping the cabin stealthy quiet.

FringBirdAloha · 07-31-2017, 10:54 AM

Quote:

Originally Posted by Ray_Dogg

I think pulling the fuse has made changes at more than just interstate speeds.

Since pulling the fuse there is actually crackling and popping occuring in track mode where before I didn't have this with the fuse in. You can sit in park and gas up to 2000rpm and release the pedal, crackle pop. Do a semi hard acceleration and let off the gas around 32mph, crackle pop. It's a major sound improvement imo.

Of course if you have the windows up all the time you aren't really gonna hear much of anything. Folding the back seat down helps a little with this. They really went all out on keeping the cabin stealthy quiet.

I pulled the fuse, pulled the back seat completely out, and had an upholsterer create a thin foam and carpet overlay for the missing seat. Sounds amazing! Snap, crackle, pop!

pwells18 · 07-31-2017, 11:07 AM

Quote:

Originally Posted by FringBirdAloha

I pulled the fuse, pulled the back seat completely out, and had an upholsterer create a thin foam and carpet overlay for the missing seat. Sounds amazing! Snap, crackle, pop!

thankfully...i have a vert- AND only take it out in nice weather..so..i hear snap/pop whenever i am driving...pretty amazing sounds...makes up for a lot of the b/s-
taking her in for 1500 mile oil change and clicking sound this week...Grrr...hope it goes smoothly..

BSR-1 · 07-31-2017, 07:50 PM

Fuse Location:

Toons · 07-31-2017, 08:06 PM

I pulled the fuse, observed for two weeks, then put the fuse back in. Not much difference to my ears.

Evolvedx27 · 08-01-2017, 12:07 AM

Quote:

Originally Posted by FringBirdAloha

I pulled the fuse, pulled the back seat completely out, and had an upholsterer create a thin foam and carpet overlay for the missing seat. Sounds amazing! Snap, crackle, pop!

im actually in the process of making a rear seat delete kit. gonna fit better than shraders kit and weighs like 3 lbs with carpet.

07-31-2017, 08:47 AM	#1
midas@bellnet Drives: 2017 camaro ZL1 Join Date: May 2017 Location: markham On. Canada Posts: 20 View My Garage	Dual exhaust mode valves It is my understanding that the dual mode exhaust valve is to always be open when in track mode, can anyone confirm this?

07-31-2017, 09:25 AM	#5
zryan Drives: 1973 z28 Rs, 2018 SS 1LE Join Date: Jun 2017 Location: Greater Philadelphia Area Posts: 323	Why do they close at interstate speeds? Even on the track? __________________ 2018 HBM SS 1LE Built 7/26: Black emblems, Smoked reflectors/lights, Dimple magnetic drain plugs, Carbon rock guards, Carbon fuel door, Elite Engineering Catch-can, BMR strut-brace,

07-31-2017, 09:34 AM	#6
Ray_Dogg Drives: ‘06 GTO(sold), ‘14 Audi S4, ‘17 ZL1 Join Date: Apr 2017 Location: San Francisco Posts: 101	I think pulling the fuse has made changes at more than just interstate speeds. Since pulling the fuse there is actually crackling and popping occuring in track mode where before I didn't have this with the fuse in. You can sit in park and gas up to 2000rpm and release the pedal, crackle pop. Do a semi hard acceleration and let off the gas around 32mph, crackle pop. It's a major sound improvement imo. Of course if you have the windows up all the time you aren't really gonna hear much of anything. Folding the back seat down helps a little with this. They really went all out on keeping the cabin stealthy quiet. __________________ ZL1 Coupe Nightfall Gray Metallic, A10, Carbon Fiber Hood, PDR

07-31-2017, 09:11 AM	#3
pwells18 Drives: 2017 zl1 conv 6 sp- '18 trackhawk Join Date: May 2017 Location: palm beach, florida Posts: 148	Glen is correct. I pulled the fuse more than a month ago, and am pleased to report, I havent stopped giggling since.

07-31-2017, 09:16 AM	#4
ninetres Drives: Crush ZLE M6 \| 2000 Corvette FRC Join Date: Jun 2010 Location: Cencal Posts: 1,659	I noticed zero difference after pulling fuse, even at highway cruise. I'm the outcast I guess.

07-31-2017, 08:06 PM	#10
Toons Speed Racer Drives: 2023 ZL1 Join Date: Oct 2008 Location: Houston Posts: 164	I pulled the fuse, observed for two weeks, then put the fuse back in. Not much difference to my ears.

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