I have a 90 Ef hatch. I'm putting a b18a1 in it. I need to do the dpfi - mpfi conversion.
I got the 4 wires from ecu to injectors. 4 wires from injectors to the resistor box. One wire from ecu to resistor box. There's two more wires. I can't seem to find out what to do with them.

 

Have you messed with any of the distributor wiring yet? The MPFI distributor has two more wires than the DPFI distributor. If my memory serves me correct, the existing ECU wires at C1 and C2 are moved and the 2 extra distributor wires are added to C1 and C2. Your two extra wires are most likely the ones that need to be added to the ECU from the dizzy. You can search on here for some great MPFI to DPFI write ups.

 

Thanks. I figured it out. The person before me already moved the pins so I couldn't find them. Got it all good now thanks!