In my 21 Mustang GT, it has a feature where you can set the car to be in quiet mode for certain times of day. It's an awesome feature that keeps the walls of my house from rattling at 530am. Does the C8 have a similar feature?

 

Eray does...... runs on the battery for a few miles, or up to 45 mph.

My buddy's new Z06 has a stealth mode, but I haven't heard it, or heard from him on how it works and how quiet it really is.

 

E-Ray is silent if it is warm enough outside.

 

Or, like where I live this time of year, I use SHUTTLE mode......

 

There isn't a good way to start a Stingray in Stealth Mode.
In Weather Mode the exhaust is in Stealth Mode but if you shut the car off in Weather Mode it reverts to Tour Mode upon restart. You can set the exhaust to Stealth Mode in My Mode then if you shut it off in My Mode it will restart in My Mode but the exhaust valves are always open during starting so the initial bark is still there until the exhaust valves close. The exhaust valves will be open when starting in Tour Mode but will close once started and won't open until some throttle is given. If you don't want to set the exhaust to Stealth in My Mode but want to keep it quiet under throttle after you started in Tour Mode then you can switch to Weather Mode as soon as the car starts.

 

Early Saturday AM, I start the car with the garage door down, then immediately open the garage door.
Don't know if this makes any difference for the neighbors, but it is the initial blast that seems loudest to me.

 

Yes it’s super easy.

Get in the car and push the start button for about 5 seconds or so WITHOUT your foot on the brake. That puts the car into service mode where it’s fully alive without the engine running. Now you can use the mode selector to change to weather mode. Put your foot on the brake and hit the start button again. Voila. It starts up in weather/quiet mode.

 

Double posted lol. Can’t seem to delete posts just edit?

 

Sweet! I wish it had something more like Ford's solution, but anything to not wake up the house everyday.

 

Mines still loud in weather mode.

Borla ATAK, I gave caring and now just crank it loud all the time.

 

That puts it in Weather Mode but the NPP valves still open during the crank event and then close once the car starts so you still get the initial loud bark.

 

Strake/others: I can’t seem to find the procedure to use Shuttle mode o a 26 Eray. I couldn’t find anything in the owners manual. Could someone enlighten me.

 

It sure starts quieter in my car, and that is the documented way to do it? It’s still loud with after market exhausts like the Borla ATAK I had but it does work.

The other option is to set My Mode to stealth exhaust most (quietest setting) then always shut the car down in My Mode and it will start quieter. I have to test if that’s any different but it does mean you can’t use it as a fun loud mode without tweaking the settings.

 

I believe it is documented in the service manual, @Andybump has posted more information. I believe he (or someone) actually took a video of the NPP valves during a start to demonstrate. The valves will also close in Tour Mode once the car has started. And the first cold start in the morning is the loudest, subsequent starts will be quieter.

 

I would love to see the video. I am gonna test this more myself now on both my Z06 and my new Stingray when it gets back from paragon.

 

Yup. They always open during the crank event, regardless of the engine sound setting, and if the engine sound setting is Stealth or Tour, they close immediately after the engine starts. In Stealth they are closed all the time. In Tour they are also closed almost all the time - always at idle most driving scenarios, opening only for aggressive acceleration.

Post 29 at this link discusses it further and shows the video evidence:
https://www.corvetteforum.com/forums...post1607151744

 

According to Google AI (which is generally wrong lol) weather mode starts it with a lower RPM so it’s quieter. So maybe that’s all it does and does not keep the flaps closed?

 

What? The engine sound setting of Stealth, which is the default setting in the Weather Driver Mode, and can be set to Stealth in both My Mode and Z-mode, keeps the tailpipe exhaust flow control valves closed all of the time. If the engine sound setting is Tour, which is the default setting in Tour Driver Mode, and can be set to Tour in both MyMode and Z-mode, keeps the tailpipe exhaust flow control valves closed at idle, and almost all driving scenarios except for aggressive acceleration. I have never read anything about a change in rpm - does that refer to idle rpm? On cold starts, there is a cold start strategy that keeps the RPMs higher for a short period of time. I don't think the cold start strategy changes with engine sound setting - the engine sound setting only affects the functioning of the tailpipe exhaust flow control valves - not any of the engine parameters. I have seen nothing about a different "rpm" for the Stealth setting of engine sound.

Now...if you actually use Weather Drive Mode (and you cannot start up in that mode), the engine/shift parameter is set to Weather and that affects Throttle Progression and Transmission Shift Mode and its possible that the engine sound could be, or perceived to be, quieter. But you cannot change the engine/shift parameter in MyMode - it defaults to Tour. You could start in MyMode or Tour Mode, then switch to Weather Drive Mode if that seems quieter to you.

AI is frequently wrong in my experience, often quoting from other wrong statements found in...wait for it ....social media like the automotive enthusiast forums. But AI does usually also list the source links, so you can check it for accuracy and credibility. See if you can repeat your AI answer and the check to see what the source was for the rpm difference. I would be curious to see if its was a credible reference and if AI interpreted it correctly.

 

Sorry I meant it keeps the flaps open during cold start and instantly closes them. They are closed while running in stealth mode and weather mode. I thought they stayed closed all the time including cold start but the other thread linked indicates that is not true? I do plan to verify it myself though

 

You can certainly start in weather mode if you change it to that while in service mode? That certainly works and it’s quieter for sure. Just not clear to me if it’s just the flaps closing quickly and not staying fully closed as you indicated in the other thread.

And yeah Google AI is frequently completely wrong.