My check engine light popped on a few days ago and I got it to the Hyundai dealer today. The service guy told me the catalytic converter needs to be replaced and will cost $1,700...money I don't have and will not be able to save up by my next smog test. I live in California, so the part is likely very expensive. Anyone know where I can get the part as cheaply as possible so I can fix it myself? I saw somewhere that it's illegal to buy and install a used catalytic converter, so I guess I'll have to buy a new part.