Those with Random Tech cats...
Original Founding Member!
Joined: Jul 1999
Posts: 9,037
Likes: 88
From: Granby, MA
Cruise-In 1, 3, 9. 10 & 11 Veteran
I agree with others...it's not the gas at all...It's your tune...your running rich. What happens is...your running rich and the unburnt fuel is making its way down the exhaust pipe and onto the cats. Here the unburnt fuel is burnt off via the cats. This turns into sulfur and is what is sent out the exhaust pipe. Thus the rotten egg smell. When you run rich there is so much over-time the cats are doing trying to get rid of all the extra unburnt fuel, that your running your cats super hot...which translates to premature failure...your 02 sensors are at risk of failing early as well if the problem if not fixed.
Time to get the tune looked at before it gets really expensive.
Time to get the tune looked at before it gets really expensive.
Last edited by XtremeVette; May 26, 2009 at 01:59 PM.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
Wow what you just said is like the opposite that i have always heard. Since when is sheetz not considered cheap gas?
Shell/Exxon/BP is not cheap gas...normally the most expensive beating out sheetz almost every time.
I live in NoVA, the fuel is fresh....
It doesn't matter what kind of gas i buy they all make the car stink. It's not the gas.
Shell/Exxon/BP is not cheap gas...normally the most expensive beating out sheetz almost every time.
I live in NoVA, the fuel is fresh....
It doesn't matter what kind of gas i buy they all make the car stink. It's not the gas.
NoVa also gets their fuel from the Colonial pipe line IIRC so fuel is fuel. The additives make the differnce, profit level sets the price
Pro
Joined: Dec 2003
Posts: 654
Likes: 1
From: chandler az
I ran them on a another car with a carburetor running 12:1 for an AFR and they never smelled. Mashing the carb brought the AFR down to 10 or 11:1, never had a problem with a smell, if anything with a carb they cleaned it up so you didn't smell like gas after running the car.
