Exhaust Odor?
Thread Starter
Advanced
Joined: Nov 2006
Posts: 78
Likes: 0
Exhaust Odor?
IF your LS2, LS3 or LS7 is tuned properly and have no problems. What should your exhaust smell like immediately after a wide open punch? Rotten eggs, gasoline, aromatic, nothing? If you get an odor, does it enter your car? I get a weird odor and it enters my 07 coupe. Normal?
Instructor
Joined: Apr 2009
Posts: 193
Likes: 1
IF your LS2, LS3 or LS7 is tuned properly and have no problems. What should your exhaust smell like immediately after a wide open punch? Rotten eggs, gasoline, aromatic, nothing? If you get an odor, does it enter your car? I get a weird odor and it enters my 07 coupe. Normal?
tks, dal
Melting Slicks
Joined: May 2004
Posts: 3,017
Likes: 2
i would have to say somewhere in between nothing or maybe a little smell of fuel. however i think the odor entering the vehicle (no matter what the odor is) is a completely different issue. that makes me think of an exhaust leak. that is what i would be looking for first.
tks, dal
tks, dal
Does the car have stock exhaust system? I have no odor whatsoever at anytime..
Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
I run longtubes with no cats and borla stingers and there is STILL no odor after tuning (confirmed by others to be sure my nose isnt just broken 
) Apparently it's hit or miss with no cats though, as some have a VERY distinct smell of fuel.
) Apparently it's hit or miss with no cats though, as some have a VERY distinct smell of fuel.
Racer
Joined: Apr 2006
Posts: 486
Likes: 2
From: The Villages FL
A rotten egg smell from the exhaust is usually due to sulpher content in the fuel. Change brand. More important is how the odor is entering the vehicle. If your side windows are closed when you do a WOT, a rear hatch, decklid weatherstrip or convertable top to deck lid weatherstrip is not sealing completely. Beyond that you need to check underbody seams near the exhaust system. Good Luck.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Burning Brakes
Joined: Jan 2008
Posts: 905
Likes: 0
From: BURTON MI
Intermediate
Joined: Oct 2009
Posts: 32
Likes: 1
From: Dallas Tx
vehicle's engine is putting out unburned gasoline vapors, air/fuel mixture is too rich, and one thing that causes this is a clogged air filter. A rotten egg smell results when unburned gasoline vapors react with chemicals in the catalytic converter... check air filter
Race Director
Joined: Oct 2005
Posts: 14,555
Likes: 1,255
From: Saint Albans, WV
Navigator
Joined: Apr 2008
Posts: 9
Likes: 0
From: ATHENS TX.
I have the same thing happen right after I punch the accelerator and let off.
Mine is and 07 also.
I get the odor which smells like the cat converter in the cab with the windows
down or up. I've had the stock cats checked and check out ok.
I give up.
Mine is and 07 also.
I get the odor which smells like the cat converter in the cab with the windows
down or up. I've had the stock cats checked and check out ok.
I give up.
