I have a crx si, im in the process of swapping a 99 ls into it. I already converted the dizzy to obd1 and i swapped out the alternator plug from the obd2 motor for an obd0 one. Its all wired up and i was wondering could I just run an obd0 pr4? Or do i need to run an obd1 ecu with a jumper?

 

Obd1. For ease of everything run a p28 with a Ls basemap.

 

Did you convert the dizzy plugs to OBD1? You can't mix and match OBD1/2 ECU/Distributor with OBD0 Distributor/ECU. Rule of thumb is OBD0 ECU -> OBD0 Distributor. OBD1/2 ECU -> OBD1/2 Distributor.