White smoke

[NP306]

Do some research - what can cause white smoke and how to diagnose the culprit. I'll get you started:
White smoke will be one of three things - unburnt oil or diesel or water. You'll only get unburnt diesel if the engine is misfiring, that at least should be obvious. Unburnt oil can only be coming from the turbo straight down the exhaust, otherwise it would be going through the engine and burning off. Water could be getting in from many places, so worry about that once you've eliminated the other options.

Is there any oil staining on the back of the cat around the exhaust?

There is no cat its a straight pipe

Its not misfiring, its starting to annoy me now