I have '97 Honda Civic 1.4iS (D14A4 engine, P3Y OBD2 ECU).
'New' engine is B16A2, OBD1, P30 ECU.
Problem: My OBD2 ECU has weird pinout. Between other things, fires injectors in pairs, has only 2 connectors, which resemble OBD1 type, but are OBD2... etc, etc. So.. I cannot use OBD2->OBD1...