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[clueless_teen via CarKB.c]

I'm doing a study on Catalytic Converters for my Science class ... i was
wondering if any one could/would help me out on finding my information. I
need to know roughly how a catalytic converter works and when would it be
wise to change a cat. in a car (meaning should i stick with the warrenty or
should i just change it when the cat. dies?)

if any one has any info that would come in handy please post it...

thanks.... clueless teen