Thanks for the link mate, I do have it in my favourites folder somewhere, but hadn't checked it since getting the ECU on my car
I managed to get it started a bit nicer this afternoon. Cold start enrichment got bumped up to 33% instead of 26%. I also used my Hilux battery as well to make sure it had plenty of voltage.
Tomorrow I'll try it with my normal battery, to see if it was fuel, or the voltage causing the issues. Or both.
Its annoying testing cold starts, as you have to wait for the engine to cool overnight for accurate testing