The following images provide the Pin-Out for the 3-Connector MY97/98 ECU for the Subaru Impreza WRX/STI/UK
Also provided is information regarding wire swapping and moving of wires for fitment of the Apexi PFC into a MY97/98 Impreza Turbo UK model (Not required if fitting the Apexi into a Jap WRX or STi).
To perform this modification you will need to :
Swap B136 Pin 8 with B136 Pin 10 (Swaps the Cam & Crank Signals)
Move B137 Pin 17 to B137 Pin 7 (Relocates the Fuel Pump Signal)
The numbers indicated with a * on the Pin-Out do not refer to 'Pin Numbers' but to the 'Notes' at the bottom of the diagram