So I have a 91 si hatch swapped with a b18b1 has an obd0 to obd1 jumper... Car runs really wel but previous owner said it has a chipped pcm for a vtec motor ( he was planning on doing an ls/v) and the car has constant on check engine light and I'm assuming it would have to do with it not having a vtec head on it. So what would the proper ecu for this car be?

 

P75 OBD1

 

Thank you very much!

 

Sorry to bring this back but finally had time to bring this back up, front of the pcm cover has obd 1 ls 5spd written on it and it's a p28 pcm that appears to be stock I snapped a pic in hope someone can confirm this for me