Hi Guy's, I know I did not get a reply but in the time since then I have found several things.
1. Australian AE 82s don't have a No 2 EFI relay. (Only Japan US and Europe)
2. Checking the injector signal is nearly impossible unless you have speacilised EFI test equipment.
Anyway I fixed the problem by running full fuel pressure (Fuel pump Relay bypass) and signaling each injector several time each using an adapter I made.
After doing this the engine now runs very well.
It appears that the injectors may have been a little gummed up or sticky.
Cheers,