The boost setup is piped as Ford intended I just have my Apexi in place of the Amal valve, i've tried it without and makes no difference. Preload is about 7psi as this is what boost it holds mate.

I'm thinking it's a metering unit fault as when my foot is planted it's fine, when I lift off slightly the problem starts again......... When my foot is planted the TPS signals the EMFPA to increase fuel pressure for full load and all is well, when I lift off it fuels only based on the air flow (flap being sucked down) and that is when i'm having the problems.
I think my EMFPA might be fucked so i'll try another one tomorrow and see what happens, if not then the metering unit itslef which I also have a spare to try.