Im doing a ls swap in my 89 hatchback si. The ecu i currently have is from my 93 DA which used to be a automatic which i swapped to a manual, and all i did was make it read in park for the car. Will this ecu just plug in (once i repin the obd1 plugs on the 89 harness) and work fine?

 

Only if you using the jumper at the ecu connections. You're hatch is obd0, this ecu is obd1.

 

yea im wiring in the odb1 plugs on the obd0 harness, using the info from :
https://honda-tech.com/forums/showth...d0+obd1+wiring

im just making sure once that is done i wont have an issue from it being a automatic ecu, cause when u do a auto to manual conversion u have to make it think its in park so it wont give u issues. So im trying to clarify that once that is done (the link above) itll work

 

You could have bought the harness for like $40 shipped and not had to hack up the wiring at the ecu on the hatch. You never know when a different motor may get swapped into it.