Noticed on full bore acceleration on my Classic PPP (otherwise unmodded) some smoke in the mirror, not noticed it at all by day but can see something at night when lit up by a following car. Can't tell colour yet as only visible at night! No strange noises. Any ideas?

 

Turbo oil seals, worn piston rings, worn valve stems/seals or even just running a bit rich will give off a small amount of dark smoke.

I am having the same problem but a lot worse. Its not the fueling (too much smoke), tried checking the turbo and the rings but still no joy

 

Hopefully it's just the Prodrive ECU enriching the mixture then, there's absolutely no sign of smoke under normal running or idling or startup. Does yours only smoke on strong acceleration?

 

Its chucks a load out under heavy boost after its been crusing for a bit but also will give small amouts out from pulling away at junctions now

 

Some black smoke on acceleration is usually a rich mixture.