So story of the week I have a 2008 Mini cooper S turbo charged replaced turbo and rebuilt cylinder heads with new head gasket and new piston rings to low and behold white smoke still at idle after 5 min and getting CEL P0300 through P0304 still any help

 

Did you replace the valve cover, or just the gasket? There are internal passages to the cover that could still be clogged.... Smoke after long idle is usually PCV related.

 

No I have not switch any of those two