V8 to V4 Sound
#41
Team Owner
Member Since: Jul 2004
Location: Redondo Beach, California
Posts: 39,569
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Yep, V8/V4 and 8 gears that aren't often used, just adds more complexity and expense to a drive train with the result of a small bit of fuel economy. We'll probably see automatic traffic engine start/stop in the future. For the consumer this is not cost effective, just helps the GM corporation need to maximize fuel economy.
#43
Yep, V8/V4 and 8 gears that aren't often used, just adds more complexity and expense to a drive train with the result of a small bit of fuel economy. We'll probably see automatic traffic engine start/stop in the future. For the consumer this is not cost effective, just helps the GM corporation need to maximize fuel economy.
The following users liked this post:
mefly2 (03-20-2023)
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Andybump (03-20-2023)
#46
Safety Car
Last edited by Mike's LS3; 03-20-2023 at 12:14 PM.
#47
I have 2024 HTC and hear the same noise when V8 drops to the v4, Is there a solution to get rid of this? I hate to bring it in for them to tell me they see nothing.
Let me know.
thanks
Let me know.
thanks
#48
Melting Slicks
Exactly, kind of a light sneeze or whoosh sound. I did not hear it at first, but once I did, I now hear it easily. Kinda neat...
#49
E-Ray, 3LZ, ZER, LIFT
Member Since: Sep 2007
Location: NE South Carolina
Posts: 29,571
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Electric stepping motors active the V4 valves in the exhaust. All exhaust gas is required to pass thru two small holes in V4. Not an issue with performance as probably <50 hp when in V4. Perhaps that is the sound some hear is when it transitions from the exhaust filling the large pipe to those small holes? I never have heard in my 2 C7s (seldom in V4) or my 2020 C8 or my present E-Ray when I drive in MY Mode set to Sport. I also often drive in Z-Mode Power set to Track so in never goes in V4.
Last edited by JerryU; 04-22-2024 at 06:14 PM.
#51
Instructor
On a 977 mile trip from San Antonio, TX to Bowling Geen, Ky I didn't even know it had the V8/V4 mode. But I saw it come up. I never felt or heard anything. The entire trip it was totally seamless, because I started watching it.
You old guys are just imagining that you are hearing things...again. LOL
You old guys are just imagining that you are hearing things...again. LOL