I am converting an EK with OBD 2 H22A to OBD 1. The engine is an OBD 2 and the car is wired that way. For me to convert it back to OBD 1 all I need is the obd2 to obd1 plug in wiring adapter right ? Or do I have to change the injectors as well since they are different on the 96 and below H22a's. I have an JDM P13 already. Thanks in advance.

 

Maybe I'm stupid but what are you trying to change back to obd1. The motor or the car?

 

I would think that it would be the motor. All I am trying to do is run a OBD 1 H22A ECU because I cant find a Japanese OBD 2 H22A ECU.