I'm putting in a D16z6 in my '89 CRX Si and i just ordered a P28 ECU and a Mugen chip. What do i need to do to hook up the P28 in place of my Si ECU.

 

You need an obd0-obd1 conversion harness. Check with blown90hatch, or kenji. They both make the harnesses.

Or you can try and get an obd0 ecu, rip the female plugs out of it, and then cut the male plugs from a obd1 engine and solder all 40-50 wires to the proper ones.

Depends on how much work you are willing to do.

Steven

 

If I'm mistaken you also need the ODB-1 distributor and injectors. Instead of going OBD-1 I just got a Zdyne 1 wire vtec conversion to run my Z6.