I have done this before and used a OBD-0 Pr3 ecu. It is a JDM B16a ecu. It will require a KNOCK SENSOR, but other than that it will work without converting to OBD-1. Actually it worked great. I used a D16z6 in a 1990 civic si, I was already MPFI. But after you convert to MPFI you will be fine.