ecu upgrade for 89 prelude

googol · Post by **googol** » Fri Dec 05, 2003 5:46 pm

I have an 89 prelude with a jdm b20a but i believe it still has the US ecu. I think the ecu is OBD0 but i'm not for sure and i know i have to have at least and OBD1 for an s200 system. What kind of things do I need to do in order to upgrade, and I just get a harness to plug the obd1 into the obd0? Any help is welcome, thanks.

It Revs · Post by **It Revs** » Sat Dec 06, 2003 9:07 am

I'm having pretty good luck with the P28 ECU and the H22 engine.
I had ODBII though. So you would need a different harness than I have.

googol · Post by **googol** » Mon Dec 08, 2003 7:44 pm

So your saying you used a hiring harness just to plug into the old wires? That's what I understand you saying. Thanks