Exhaust Smell
Thread Starter
Instructor
Joined: Aug 2005
Posts: 166
Likes: 10
From: Greenville Ohio
Exhaust Smell
I have a 2000 C5 with Corsa exhaust, use Shell 93 octane gas and when the car has fully warmed up has an exhaust smell. When I have been on cruises the car behind me stays back more than normal to not have to smell the exhaust. In your opinion are the Catalytic converters defective and if so is there anything short of changing them to rectify this situation like putting in an additive in the gas? What are your recommendations?
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
i would still say it is the cats. the rear 02 sensors monitor the life of the cats and when the cats start to go wierd stuff starts to happen to the fueling. people are getting rid of theirs all the time to go catless, i would try to get a set of used oem ones off the forum here and try those.
Melting Slicks
Joined: Aug 2006
Posts: 3,270
Likes: 29
From: Chilliwack B.C.
[QUOTE=66 Vette;1580372137]When I have been on cruises the car behind me stays back more than normal to not have to smell the exhaust. QUOTE]
My '88C4 had similar issues. Once I replaced the cats (which I had to do anyways to pass the Sniffer test) all was well.
My '88C4 had similar issues. Once I replaced the cats (which I had to do anyways to pass the Sniffer test) all was well.
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Thread Starter
Instructor
Joined: Aug 2005
Posts: 166
Likes: 10
From: Greenville Ohio
i would still say it is the cats. the rear 02 sensors monitor the life of the cats and when the cats start to go wierd stuff starts to happen to the fueling. people are getting rid of theirs all the time to go catless, i would try to get a set of used oem ones off the forum here and try those.
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
when most people go catless they get long tubes and a H or X pipe that doesnt have them. for example my TSP long tube and X pipe deletes the cats and the bungs for the rear sensors. you have to get the car tuned to turn off the rear sensors or you will get a CEL and the fuel table will have to be readjusted or it will stink because of too much fuel. best bet is to just have them replaced if you dont want to get it tuned at this point.
