Rotten Egg Smell ???
Burning Brakes
Joined: Mar 2013
Posts: 1,172
Likes: 226
From: Colorado
I had it when I got on my '06, and get a whiff when I get on my '13, as well. But only at WOT. The car runs rich at this altitude, 7000', so it's not unexpected. It could be the COTS adding fuel to cool off the CATS. In any event, common thing and no big deal. It was worse on the '06 with a Diablo Predator tune.
Team Owner
Joined: Oct 2007
Posts: 26,745
Likes: 694
From: PA
Sure....the smell of raw gas will be there though. More so if you have mods others than just headers and no cats, like say a cam.
Burning Brakes
Joined: Jun 2008
Posts: 892
Likes: 1
From: New Smyrna Beach Florida
Safety Car
Joined: Oct 2003
Posts: 4,024
Likes: 13
From: Loveland CO to Central Coast CA
With only 900 miles in 7 years, maybe the engine's rarely been warm enough. Then sulfur might've accumulated on the cats.
Now that you're regularly (?) driving it up-to-temperature, the sulfur is burning off.
I bet a few multi-hour trips will eliminate the odor completely.
If not, worse case I can imagine is that the cats are permanently fouled and need replacing.
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Race Director
Joined: May 2006
Posts: 12,973
Likes: 1,020
From: SOFLA
2016 Corvette of Year
2015 C6 of Year Finalist
Amidst all these quips about diet, I'd sure like to know more about the follow-up to this question. All the gas in my area seems to have Ethanol these days, and I'm getting a brutal smell of eggs. I was wondering if it could be because of the recent change of climate for the vehicle (purchased/shipped from Georgia to New England). What would the ethanol enriched gas do? Thanks in advance. 
Advanced
Joined: Dec 2013
Posts: 76
Likes: 0
From: NH
Race Director
Joined: Oct 2005
Posts: 14,555
Likes: 1,255
From: Saint Albans, WV
It's a combustion engine that emits odor so it's not going away.
Advanced
Joined: Dec 2013
Posts: 76
Likes: 0
From: NH
Okay, either people aren't understanding the issue, or I'm not understanding the cure. I've been driving internal combustion engine automobiles for 30 years. This is not a smell I've encountered during that time. This is *definitely* Hydrogen Sulfide, and definitely not normal. (I worked in environmental remediation for about a decade and I'm very acquainted with this smell.)
Race Director
Joined: Oct 2005
Posts: 14,555
Likes: 1,255
From: Saint Albans, WV
Okay, either people aren't understanding the issue, or I'm not understanding the cure. I've been driving internal combustion engine automobiles for 30 years. This is not a smell I've encountered during that time. This is *definitely* Hydrogen Sulfide, and definitely not normal. (I worked in environmental remediation for about a decade and I'm very acquainted with this smell.)
Advanced
Joined: Feb 2008
Posts: 94
Likes: 2
From: NE
