what ECU are you trying to run?

DPFI->MPFI conversions arent' that bad. Look at the wire colors on a MPFI car. There are four wires with each a different color, corresponding to inj1, inj2, inj3, inj4. And a shared 12v source (yel/blk I think).

So, your inj1 and inj2 are already wired. You need 2 wires to the ECU (inj3 and inj4). And then 2 wires to the shared 12v rail, at the resistor box...

Do take special consideration, to make sure that the proper injector number is going to proper cylinder...

What ECU?

-PHiZ