From what I understand the 08+ ECU calculates what fuel psi the engine needs based on certain parameters, not taking an input of fuel psi from a sensor. If you look at the PID list in Livelink for the 08+ you won't see a fuel pressure PID. I think this has to do with the DBW system as compared to the cable throttle body on the earlier Foci.
FSWerks stg2 w/ water/meth; Cossie intake.
Massive Speed stg 2 cams in the works....