NPP -- Stealth Mode
Thread Starter
Intermediate
Joined: Jan 2005
Posts: 49
Likes: 4
From: Portland OR
NPP -- Stealth Mode
When in Stealth mode, should the exhaust valves ever open?
On my stingray, I swear they always stayed closed. On my ZO6, they open ~3500rpms, while in stealth mode. My service dept is saying "as-designed functionality".
On my stingray, I swear they always stayed closed. On my ZO6, they open ~3500rpms, while in stealth mode. My service dept is saying "as-designed functionality".
Melting Slicks
Joined: Oct 2007
Posts: 2,398
Likes: 857
Like you said its around 3500rpm or so but it also depends on the throttle percentage.
I think it comes out to when the PCM sees both greater than 3600rpm and 75% throttle.
May not be 100% correct but you get the point.
Thread Starter
Intermediate
Joined: Jan 2005
Posts: 49
Likes: 4
From: Portland OR
Thread Starter
Intermediate
Joined: Jan 2005
Posts: 49
Likes: 4
From: Portland OR
I don't have any references in front of me right now so don't hold me to this.
Like you said its around 3500rpm or so but it also depends on the throttle percentage.
I think it comes out to when the PCM sees both greater than 3600rpm and 75% throttle.
May not be 100% correct but you get the point.
Like you said its around 3500rpm or so but it also depends on the throttle percentage.
I think it comes out to when the PCM sees both greater than 3600rpm and 75% throttle.
May not be 100% correct but you get the point.
Drifting
Joined: Apr 2007
Posts: 1,642
Likes: 633
From: Lake Bluff IL
They definitely open on full throttle acceleration when in Tour mode. I leave mine in Sport mode so they are open on startup and until I back off on acceleration or it gets into a higher gear. --Bob
Tech Contributor
Joined: Oct 1999
Posts: 41,057
Likes: 9,817
From: Charlotte, NC (formerly Endicott, NY)
Ran in Stealth Mode on Saturday. Valves didn't open with RPM hitting 4K + although was not in any place where I could go wide open throttle. Got to about 60% throttle but not enough room to do anymore.
Bill
Bill
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