I have a 92 prelude with an h22a4 running OBD1 and have been running on the H23 ecu and injectors up until yesterday when I tried installing the saturated 370cc RC injectors and a P13 ECU. It was running much richer than I expected so I put the resistor box back in line with the injectors and changed the plugs because they were fouled out so basically I put it back to the way it was before when it was running fine. I still have a real bad misfire and its in limp mode/It won't rev over 3,500rpm. I was thinking a compression test is a good start any other ideas.

 

I always forget what is saturated injectors and what is non saturated.

If your running injectors without the resistor box did you plug the yel/blk wire into the 4 injector wires that ran to the resistor box?

Also your running an obd2 engine on an obd 1 ecu, Im assuming that you converted it over to obd1 or I miss read that?

 

Saturated are high impedance, pull the resistor box and mod the wiring for it.

 

I would start with figuring out the ecu issue. For example, is it throwing any codes?