[Alpha1BC]

Originally Posted by FarmerFran

FWIW,

My 2020 SS with NPP is just as loud on startup no matter what mode I turn it off in. And it will not let me change modes unless the car is started.

You have to "key" it to run first, meaning hold the start button for 5 seconds without the clutch or brake. Then you can do a drive mode or engine sound selection to pick stealth before starting. I believe stealth is the only mode that keeps the valves closed during startup, all others are open.

[FarmerFran]

Originally Posted by Alpha1BC

You have to "key" it to run first, meaning hold the start button for 5 seconds without the clutch or brake. Then you can do a drive mode or engine sound selection to pick stealth before starting. I believe stealth is the only mode that keeps the valves closed during startup, all others are open.

Thanks, I forgot about the hold for 5 seconds. What a PITA that would be every morning.

[Crushin_LT1]

Originally Posted by FarmerFran

FWIW,

My 2020 SS with NPP is just as loud on startup no matter what mode I turn it off in. And it will not let me change modes unless the car is started.

Have you tried stealth mode? there is a difference, at least in the LT1, with stealth mode. You do have to remember to either turn it to stealth mode or Snow/Ice prior to turning off.

[Alpha1BC]

Originally Posted by Crushin_LT1

Have you tried stealth mode? there is a difference, at least in the LT1, with stealth mode. You do have to remember to either turn it to stealth mode or Snow/Ice prior to turning off.

If you turn it off it'll revert back to "tour" when you key it back on. I'm pretty sure for leaving exhaust mode in auto and setting drive mode to snow/ice that's the case at least, would need to double check manually setting exhaust mode to stealth.

[6sigma]

Originally Posted by FarmerFran

FWIW,

My 2020 SS with NPP is just as loud on startup no matter what mode I turn it off in. And it will not let me change modes unless the car is started.

This is the same on the LT1. Snow/ice mode does put the car in stealth mode but snow/ice mode can only be selected when the engine is running and it does not remain in snow/ice mode when shutoff in that mode. So the only way to start the car in stealth mode is to turn the car 'on' without starting the engine, manually go into the vehicle settings and select stealth mode. Then start the engine. Then go back to the menu and select whatever normal mode you want, unless you want it in stealth all the time. It's kind of a PITA.

Stealth does quiet down cold start though. Starting in Tour or Sport seems the same as I think the valves are opened on start either mode. If I want a quiet start (early morning or neighbors outside or something) I will manually put it in stealth mode and start the car with the garage door closed and it isn't too loud at all.

[FarmerFran]

Originally Posted by Crushin_LT1

Have you tried stealth mode? there is a difference, at least in the LT1, with stealth mode. You do have to remember to either turn it to stealth mode or Snow/Ice prior to turning off.

I tried, but forgot it reverts back to Tour on a restart, so I basically did not try it

Mine lives in Track mode so I guess for me it is moot

I will try and get some start up sounds in different modes,

[Crushin_LT1]

Originally Posted by Alpha1BC

If you turn it off it'll revert back to "tour" when you key it back on. I'm pretty sure for leaving exhaust mode in auto and setting drive mode to snow/ice that's the case at least, would need to double check manually setting exhaust mode to stealth.

Fair, I haven't tried turning it to Snow/Ice mode to leave off yet, it hasn't been snowy or icy.

[Alpha1BC]

Originally Posted by Crushin_LT1

Fair, I haven't tried turning it to Snow/Ice mode to leave off yet, it hasn't been snowy or icy.

Yup, I think Tour and Sport are the only modes that it can keep over key cycles. If Track or Snow/Ice are picked when you shut it off it'll be in Tour next time you start it up, maybe Sport if that logic changed for MY18 or later.

[arpad_m]

Originally Posted by Alpha1BC

Yup, I think Tour and Sport are the only modes that it can keep over key cycles. If Track or Snow/Ice are picked when you shut it off it'll be in Tour next time you start it up, maybe Sport if that logic changed for MY18 or later.

Yep. Safety first and low surprise factor next. Understandable, if mildly annoying.

[CHASLT1]

Originally Posted by 02blackss

But you can confirm you have stealth?

Jason

It does.

[CHASLT1]

Originally Posted by UnknownJinX

Just tell your neighbour to be grateful that you don't drive a BMW M4.

M4 cold starts are even louder.

I start my cars with the garage door down.

[Vaska]

You guys are crazy. Buy a large displacement V8 muscle car then worry about waking up neighbours from starting the car. What’s the point of having a Camaro then? Might as well buy something like a Cruze. Last thing on my mind when shopping for a car is “damn this is loud, my neighbors will hate me”.

[BrandanK]

Originally Posted by bryanw80

I don't have a stealth mode in my 2020 LT1. Have Tour, Sport and Snow/Ice...Snow/Ice and Tour sound exactly the same to me

Bryan,
You have Stealth Mode. You will need to go into the correct infotainment screen.

Go to vehicle settings - > drive mode - > engine sound - > stealth mode

BK

[N2OPROFESSOR]

Originally Posted by Lemmy Camaro

Any Camaro with the NPP option should include all 4 of the exhaust modes (stealth, tour, sport and track). Either tied to drive mode or changed through the settings on the screen

Mine has Stealth, Touring, Sport.