RX-7 Injectors in a RB20DET Question

[Van Dalen]

I bought the car non running ('89 coupe) with a RB20 in it and have since got it running (barely). We're working on the wiring harness and noticed the injector wires were messed with. Buddy of mine said they were RX-7 injectors and said I need resistors. Something about the impedance being different but he didn't know anymore than that about it.

So now the question, what kind of resistors do I need to solder into the harness?

If that's too vague tell me what more you need to know and I'll try to get more info.

Thanks,
Dalen