Hi guys the problem got worse so that it now cuts out as soon as you put any load on the engine. Typical no problem in first up to 6000 rpm. then in any other gear the it will cut out at anything from 3000 rpm upwards and seems to be related to the load on the engine. It will cut out earlier on an uphill road than on a level road.
It is now back with the dealer who are unable to identify the fault and will now presumably go back to the factory.
Seems to me like it has something to do with the movement of the engine/drive train. I've had a similar problem and it turned out to be a simple faulty cable/connector that changed position when the engine moved - only happened under a certain amount of load which also relates to uphill/downhill driving. Could be interesting to know weather a slow or quick increase of load changes anything - like cutting-out-RPM... also in different gears... Guess it could also be a bad connection inside the loom.
Anyhow, I wish it will be sorted soon.