thx guys.
did some search, many have suggested just replace the whole CATALYTIC CONVERTERS from Y-pipe, to the other end.
i found the toyota oem is very expensive:
Catalytic converter, corolla, 1.8l, all 00-02 $1,156.80 $867.60
Parts & Prices For Estimating Purpose Only.
$211.50 for covertergeek.
http://www.convertergeek.com/item.ww...=convertergeek
$150 from a guy on ebay:
http://cgi.ebay.com/ebaymotors/TOYOT...QQcmdZViewItem
anyone has exp. with any of those?
of course the guy on ebay is the best price. but i don't want to get check-engine light and waste my dollar on something that doesn't work at all.