Sorry - should have explained, Customer having running issues with above car, fault code P0089 when it fails and goes into reduced power but ok at all other times, no fuel restriction and new filter - suspect faulty high pressure pump issues.
Obtained a new suction control valve, fitted and cleared adaption values and re-programmed injector codes as recommended by scan tool - fault still the same, spoke to dealer who says that until they do the same with there tool it will be. The chap on the phone tried to explian that the pump has fancy electronics in it that need re-aligning to the control unit before it will re-adapt (Sorry but not that dim - it only has the sction control valve in it !). Was interested to know if anyone else has had similar and why the carmen scan does not fully do what the dealer tool does when it lists the same function.
Taking car to dealer early next week for them to do their "magic" and will see if that cures it or if we have a further problem with the pump.