Originally Posted by stereo
if you have a 99-00 then just use the B16a2 engine harness just have to wire up the 2nd O2 if you have a 96-98 then you will need a custom harness as the 99-00 EK has the OBD2b the plugs will fit but wrong pin assignment.
:werd: 96-98 is OBD2a and 99-01 is OBD2b so therefore you would need the ECU conversion harness. You dont have the Si wiring harness?