I went to calibrate the lpg so I tried to load the driver for the usb interface - no joy.  Download the drivers from the manufacturers website - no joy.  Try all sorts of drivers I find on the net - no joy.  Stumble across one on the Motogas website - it works.
Started calibration - one cyl ok, 3 = stall. 
Suspect air leak - remove plenum and shift wiring around.
Restarted calibration again - one cyl ok, 3 = stall. 
Suspect air leak in different place - remove breather ECOTEC Box and replace washers which were shot.
Restart calibration again - one cyl ok, 3 = stall. 
break it - left it and tried to get on OOF - no joy.  break it - searched the internet for clues including the cached pages of OOF - no joy.
I niggling thought entered my mind so went to fill the lpg tank some more.  1st station the sat decides to take me to it via manchester.  I stop, reprogramme idiot-nav and get to fleet Total garage.  LPG nossle buggered - break it.  Went to M3 services (the back route)  almost get caught by a copper.
Filled up with LPG, it's a single hole tank so it took forever.  Drove home and restarted calibration - worked first time!
Arse!  Who's a rather eejit?!  
 
 
On the plus side, it rather works!  
 
  
 