Focus ST problem

[paul-sg3cv]

Hi
I have a modded focus st 2006. The car lost power and came to a stop. When I start the car it stalls straight away. I unplugged the Maf sensor and the car goes but in limp mode if I plug it back in it stalls again. I have replaced the Maf sensor but still the same. I have a code saying fuel rail sensor bank 1 could it be that ? Any help would be appreciated a lot
Cheers
Paul

[Matt_E_Mulsion]

Well start with the fault/code that the car is giving you, that's all you can do if you don't want to take it to a garage for a proper diagnosis.