Just done the above to a friends car,
confict of interest on the internet.. some say plug and play where others say CAS wire needs repinning @ F1 connector (located next to ECU)
"I did mine euro s13 with jdm sr20det redtop. You will need to change f1 plug , re-pin the big plug near the headlight, change thermo sensor ( 1pin ) , make the rpm work ( same shit with transistor resistor or wtf shit ) = congrats , start the engine "
"When I did mine I used the starter/alternator loom from the UK car as the plugs were different on the JDM loom, the UK knock sensor wiring isn't used as that's in the other loom on the JDM car. Apart from that it needed the cranking signal wire moving and the resistor in the speedo wire, that's all. I don't know if there was anything else required that I missed, it didn't make a difference to the car working if there was "
can only one shed any light? cheers