Thanks for the replys, i think the problem could be that the pump might not be suppling enough pressure because the standard EFi (Fiesta) turbos run at 3 bar standard and the MFi's run at 5 bar, maybe even though it's an uprated pump it might not be upto the job of getting enough pressure there... ? ?

If anyone knows if my suspicious are correct and any help would be much appreciated.

Cheers.