Thanks Andy, I have taken a reading from the back of the HP pump, I get 6 bar with ignition on and cranking whilst low pressure pump runs. With IMV disconnected I get 120bar cranking, and over 1000bar if IMV blanking plate fitted. The 6bar and 120bar figures are also seen in live data when everything is connected. So I either have a faulty new IMV or it's not being controlled correctly. I'll try and have another look today if time allows