2.0TDI smoking.

[CrispDust]

Ok so its an Altea, but all the same cars under the skin...
My 2.0TDI smokes. Blue/white smoke thats heavy and lingers - I'm sure its diesel, not engine oil. What colour is diesel smoke? I would have thought it sooty black?
It only does it briefly when I go from idle or overrun. It doesn't do when I hoof it or accelerate gently after the initial pedal squeeze, just that first 2-400 revs above idle speed. The car doesn't seem down on power (remapped 3 months ago) but I'm leaving clouds of smoke at every junction.

Presumably something is causing overfueling at the early stage, then correcting. This started after I took off the egr and thoroughly cleaned it (2 toothbrushes, 10 pairs of gloves, 2 tins of carb cleaner and lots and lots of mess) The egr seemed to be actually ever so slightly stuck open with the soot build up (only 27k miles). I checked the diaphragm still worked to open valve and it was sealing correctly.
I did get a cel light up for approx 20 miles but this has since gone.
Would a loose air pipe after the turbo cause this as I did change oil at same time and removed cleaned all the pipe work to and from intercooler which had a lot of oil leaking from the dodgy pipe seals and supposedly clean filtered air? A leak of boosted air could lead to a lower charge at inlet manifold confusing the ecu?
I've ordered vag com so await to see what fault codes are present but would be grateful for any ideas.
Thanks

[CrispDust]

OK vag com shows no fault at all. Now smoking heavily most of the time and its burning engine oil, not fuel.
Also a faint engine speed/pitch related whine, sounds like a distant police siren. Turbo ******* or is it the tandem pump?
Turbo still giving full boost - up to 2,5 bar actual and specified and drives fine apart from smoke screen behind car!
Off to dealers on Wednesday as still under warranty.

[CrispDust]

Has now stopped, suspect overfilled with oil and dealer found a loose/leaking/knacked turbo to intercooler pipe