I hope this is the right forum section to put this in.

It has been a while since I’ve worked on my integra.

My ECU has gone missing and I’m in need of a new one. I’m having trouble distinguishing which would be the proper ECU for my car. Motor is a B18C1. Integra is a 1995 USDM Acura Integra GS-R with a manual transmission. . As far as I know the car is all OBD1 but I don’t know much about all of that.


I have some type of conversion harness from previous owner but not sure why because it looks to be OBD1 to OBD1 connections? Previous owner did have a VTEC controller hooked up. It has since been removed.

This is what is below my dash. Can someone help direct me on which ECU I need to purchase. Thanks!

 

And to be clear, I did my research the male plug is in fact OBD1 (correct me if I’m wrong) but my confusion is more on what to do with the harness? Do I need it? What purpose is this serving? And do I just need a regular p72 OBD1 ECU?

 

The OBD-1 -> OBD-1 adapter harness was utilized for the installation of the VTEC controller so that the factory wiring didn't have to be cut up. Remove it. Now you can plug a factory OBD-1 ECU directly into the chassis wiring without the adapter. You should use a 37820-P72-A01 if you intend to utilize a stock computer. A tunable solution would be even better... a P28 or equivalent with a Hondata s300 would be perfect.