there is no warning lights on dash, I haven't had any diagnostics plugged in as yet .
Ok thanks , I have cleaned out the egr valve which was fairly good tbh
also has the vortex type crank case breather fitted , I am concerned about you say possible turbo failure , would this cause black smoke ?
also could it be a Cat issue maybe , as my wife drives very slow lol
about a year ago when I drive car hard after a jouney the smoke would clear , but this has slowly got worse over time . thanks again for your advice ..!