Hi there, could be excess oil in the exhaust system trying to burn away, as I had the same thing happen to me, car started to smoke, when I took the exhaust side of the turbo I found a big puddle of oil, so sent the turbo away to be rebuilt, when it come back got it fitted and the car still smoked so cleaned the oil seporater and put a prefilter on the turbo and still smoked but after a few days of driving it soon disapeared.

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