Hi guys, really hope some1 can help me out on this. Bought a chipped P28 ecu and OBB2 - OBD1 conversion harness lately. My ride's a JDM 98spec ITR DC2 (P73). I plug in the chipped ecu using the conversion harness and the 'Check Engine' light came up. I jump the diagnostic plug and the error code that came out was 22. I referred to my reference and realized it meant VTEC Oil Pressure Switch. I then plug just the ECU into a frd's JDM EG6 and it worked perfectly fine. Does the problem lies with the conversion harness or the ECU ? Hope you guys can enlighten me on this. Thank you.