Bought an aftermarket catalytic converter from ebay. The buyer claimed it would be a bolt on fit. Surprise surprise it was not a bolt on fit. After forcing the catalytic converter into place (there was no damage to the catalytic converter) there was an awful rattle. I drove the car about 5,000 with this catalytic converter. Not only that the after market catalytic converter started throwing CEL errors. I have since read on these forums that some of these after market cats do not clean the exhaust enough for the O2 sensors so it throws an error. This was just a bad overall buy and a lessoned learned the hard way. I'm trying to get anything I can for this cat. I will consider any offers.
Aftermarket Catalytic Converter 
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