Performance exhaust
Melting Slicks
Joined: Aug 2014
Posts: 2,746
Likes: 916
I definitely see less gas mileage because when I have the exhaust in track mode, I like to let the engine rev a bit higher and I drive more spiritedly. I suspect that if I didn't change my driving behavior, I would get just about the same mileage as I would with it in stealth mode. If anything, I would think that a more open, freer flowing exhaust would yield a slight increase in mileage if all else was held constant.
Administrator
Joined: Mar 2001
Posts: 368,791
Likes: 24,900
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '26
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Yeh, I too like listening to the exhaust note more with the valves open so I do tend to keep my foot on the gas pedal a bit more - if gas mileage goes down a little, so be it. But if I drive conservatively, I really do not notice any decrease in gas mileage with the valves open.
Thread Starter
Burning Brakes
Joined: Apr 2018
Posts: 887
Likes: 504
I definitely see less gas mileage because when I have the exhaust in track mode, I like to let the engine rev a bit higher and I drive more spiritedly. I suspect that if I didn't change my driving behavior, I would get just about the same mileage as I would with it in stealth mode. If anything, I would think that a more open, freer flowing exhaust would yield a slight increase in mileage if all else was held constant.
Terrible situation, I hope its temporary but with companies pushing EVs. I think it may go higher.
@C7GSM7VERT
Joined: Mar 2014
Posts: 1,024
Likes: 937
From: S.F. Bay Area,CA
2025 C7 of the Year Finalist- Unmodified
2024 C7 of the Year Finalist - Unmodified
Yeh, I too like listening to the exhaust note more with the valves open so I do tend to keep my foot on the gas pedal a bit more - if gas mileage goes down a little, so be it. But if I drive conservatively, I really do not notice any decrease in gas mileage with the valves open.
Le Mans Master
Joined: Jul 2004
Posts: 5,043
Likes: 943
From: Bonney Lake Washington
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette & Porsche 911: How Two Icons Conquered the Last 25 Years
Joe Kucinski
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!
Michael S. Palmer
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
Roadster Madness. 😠
Joined: Sep 2009
Posts: 6,307
Likes: 2,374
From: Ventura Co Ca
SoCal Regional Events Coordinator
St. Jude Donor '13, '20-'21
I leave it in Stealth, unless there is a loud pretender, close by.
.
On a side note, I did notice on the way back from picking up my C6 at the Corvette Museum, I lost about a mile per gallon having the top down. It was worth it!
.
On a side note, I did notice on the way back from picking up my C6 at the Corvette Museum, I lost about a mile per gallon having the top down. It was worth it!
Intermediate
Joined: May 2020
Posts: 47
Likes: 11
From: Republic Missouri
Gas Mileage?
As soon as I got my '19 C7 a few years ago, I removed the stock muffler. Period. Sounds great, especially when you get on it, otherwise not too loud and no drone that is bothersome. Who cares about mpg? Do we join the Corvette club and really wonder about MPG? Its a Corvette. GM already screwed things up with the whole AFM deal. Because they thought maybe mpg was a dealbreaker on a traditional combustion engine on a CORVETTE! What a mess! Caused a whole array off issues over this. We dont buy these cars to get great gas mileage or run on 4cyl. Its an icon. Want great MPG? Buy a Prius or go Elec! Tesla. I just pay whatever the cost of premium to fill it up and enjoy! Thats it. MPG threads here are so funny to me
Last edited by Clay H Trevino; May 10, 2022 at 01:11 PM.
Race Director
Joined: Apr 2007
Posts: 16,025
Likes: 1,656
From: Toronto, Canada
C7 of the Year - Unmodified Finalist 2021