Is not going well

Ran perfectly on the test drive and inspection at his house.

Twenty miles home seems fine (although first time driving it so distracted obviously). Then..


1.Mysterious smoke coming out of the back under any type of boost. Either white or blue ... probably white.

2.Mysterious smoke/mist coming from the engine bay noticed at idle, seems to be intermittent and has no real smell.


Previous owner of course knows nothing about it never had these issues.

So .... anyone know a decent mechanic in the Watford area?