I'm planning on adding in an RTek on my car as I got a pretty good deal for one and I know it requires 4x720cc injectors, where I get confused is the whole impedance and connector thing (square or oval). I have a 1988 10th anniversary (Turbo2) with the stock N332 ECU and it's a Canadian domestic market model. Do I use high or low impedance (I've read other forums but the answer doesn't seem to be unanimous)? Also, what kind of connector should I use? Is there another car or place I can source these injectors for a better price? Thanks!

 

1988 was split into two options, late or early. Early models were the same as 1986 and 1987, and came with low impedance (1-3 ohm) fuel injectors, and had a fuel injector resistor box behind the passenger headlight.

Late models used high impedance (10-13ohm) injectors and no resistor box behind the passenger headlight.

If you have the resistor box, you have low impedance injectors.

You can use high impedance injectors in an early model by bypassing the resistor box.

you can use low impedance injectors in a late model by adding a 10 ohm resistor (I forget all the resistor specs but you can search for it).

if you have your original fuel injectors, you can measure their resistance to verify if low or high impedance.

Multiple vendors sell injector connectors, and even adapters. I’d recommend going with a good brand for injectors, and it doesn’t hurt getting them flow tested to verify their flow rate.