I have worked it out with a freind now and yes you can run the ecu very easly the PAT wont stop the ecu and on my loom i only had to connect a permanant live and ignition live and earth all the earth wires i removed and replaced the stop solinoid for a old 12 volt one and swaped the thermostate housing for the old one for the fan switch. Now all engine sensors work fine the only isue i have now is the waste gate sticking so slightly low on power but that will be sorted soon hope this helps anyone one else that is trying to make there tdi run on its ecu as there seems to be a distinct lack of information on the web ps mine was the 104 pin ecu