hey i just swaped a jdm b18c into my 93 si that had a b16a2 in it b4. i used everying thing that was on the b16 from the tranny to the dizzy to the harness to the down pipe thing is now i have a check engine light and its throing code 1 "fault in O2 circuitry" i checked the plug and it is pluged in and every thing does any1 know what could be wrong??? i dont think my O2 sensor went bad because it worked fine b4 and it never even left the downpipe during the swap? does any one have a solution to this? should i try just wiring the O2 sensor right to the ecu bypassing the harness?