Aaaaaaargh,
this is becoming a bleedin' epic, I've used the Bosch part list site and there are two options but neither of them gives a MAP part or a pressure sensor. I've worked out from another Bosch part PDF that Bosch call MAP's pressure sensors and that gives me two possible part numbers.
I think I want 0281 002534, I can provide VIN and/or Reg via a PM if anyone could please confirm this is the correct part.