haha

jdm=no egr, no carbon can and oh yea NO EMISSIONS CRAP
sorry had to

yes an unplugged 02 sensor will make your car run insanely rich
I assume you didnt do this swap.

If you still dont pass, which you probably wont get a new cat and a fpr. lean it out as much as you feel safe to do. THIS IS TEMPORARY FOR EMISSIONS ONLY. do not drive alot with low fp and definitely hard. other than that ur not gonna pass without emissions equipment.