THE UNIT ON TOP OF THE DIESEL PUMP WHICH WAS REPLACED HAS SLOTS WHICH BY ADJUSTMENT ALTER VOLUMETRIC FLOW TO INJECTORS ,HAVING REPLACED IT AND THE FAULT STILL THERE I STARTED TO "PLAY" WITH THE SETTINGS, 0.25mm AT A TIME AND GOT THE VEHICLE TO IDLE PERFECTLY BUT NOT REV UP, SO ALTERED IT BY 0.1mm AT AT A TIME AND NOW AT LONG LAST THE CAR RUNS PERFECTLY. SO MUCH FOR MY LOCAL BOSCH DIESEL AGENT PASSING BENCH TESTS!! INFURIATING TO THINK OF THE MAN HOURS THAT WERE WASTED DUE TO BAD TESTING