Originally Posted by Jafro
I don't know if ALL H/A motors have that treatment, but P05 and P06 cars do.
Very often the parts codes will match the ECU, like in 90-93 Integras, parts are stamped PR4 with a few numbers. I doubt it works on 92-93 GS-R's though, I think most of the parts are still stamped PR4 though it uses a P61 computer. Be careful, the numbers don't always match.