just swapped a h23 into a 93prelude. because the car was right hand drive the ecu was on the left and h22 harness was too short. I used the h23 with a h23 distributor. because of the external coil pack. i am wondering if the pinouts are the same for the p13 and p14 ecu. i have the pinouts for the h22 obd1 of course.

 

yes the pin outs are the same for the p14, you will have to add a couple of wires for vtec, and vtec press
https://honda-tech.com/zerothread?id=830163
check that thread for what pins to run wires too,

but other than the vtec wires the h23 and h22 wiring harnesses are basically the same, some h23 harneses come already wired for vtec, but that is rare