PM5 Ecu

is the pm5 ecu obd-0 or obd-1?

obd0

All fourth gens, including SI's which have pm6 ecus are obd-0. All Hondas before 92 were obd-0. Cars from 92-95 were obd-1, and those from 96+ were obd-2. If your doing a swap it would be a good idea to run obd-1 for tuning potential...