I found few topics what could be compatible but no one phisicly connect different ECUs to the car (or i can not find this brave guy ) - mainly all 3 plugs ECU got nearly the same pinouts - difference between JDM and Europen is pin for fuel pomp and switched cam and crankshaft sensors pins - thats all what i found.. will be great when someone can give the technical info about hardware configuration under the bonnet for the specific cars - what the differences are...
What i think (it's only my mind) that it should be possible to use the orydinary JDM ECU from the same year for UK car (JDM is for 100 RON fuel - UK 97 ... that the ignition advance is less in UK for safty reason)...
For any technical info i will be grateful.