The following images provide the Pin-Out for the 3-Connector MY99/00 ECU for the Subaru Impreza WRX/STI/UK
Also provided is information regarding wire swapping for fitment of the Apexi PFC into a MY99/00 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 5 with B136 Pin 6 (Swaps the Cam & Crank Signals)
On the MY99/00 it is not necessary to move the Fuel Pump Wire
The numbers indicated with a * on the Pin-Out indicate the 'Pin Numbers' in conjunction with the 'Notes' at the bottom of the diagram