Okay another update, took it to them and the first thing they were saying about the smoke was that it was running very rich, on diagnostics it came up as multiple misfires and another fault for over boosting, also the engine oil warning light came up also and when checked it showed it was on minimum,
So in 6 days 1 litre of oil has gone.
They then took it for a drive and came back saying it is the turbo, although they are not sure. But the symtoms are showing up as that (high oil consumption and white smoke from exhaust),
Now to decide is a new turbo needed or not?
They didn't charge for diagnostics because they couldn't pinpoint me to anything directly, what are peoples view on this?