04-23-2004, 11:51 AM
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#21
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Naturally Aspirated
Join Date: Oct 2003
Location: Abbotsford, BC, Canada
My Ride: 1989 Turbo Caravan
Engine: 2.5L 8V Sohc
Induct: Turbo
1/4: 13.400
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Cats are basically afterburners!!!!!!! picture honycomb cereal, thats what the insides look like, the exhaust gases pass thru that honeycomb and a chemical reaction takes place, NOx is reduced and the others gases are changed from Hc's, CO to CO2 and H20. Coolant, oil etc coats the substrate and renders it useless. Cats don't wear out, they get contaminated and stop working, thats how Catalysts works, they help or create chemical reactions but don't get used up.
Sorry If I rant about cats but I am a emissions repair shop and have seen our NOx haze dissapear over the last 10 yrs, yes they do produce CO2 but hey, at least we can breath better, lol!
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