as above.....ive had my car set up a month or so ago but still not happy with the amount of black/brown smoke i am getting.......if i rev it quite hard in neutral at a standstill i get a large cloud of black smoke out the zorst just as i gets down near idle speed.....also if im giving it some im getting a lot of black/brown on overrun too plus on a quick pullaway from standin start i seem to get loads of the same. Why is this happening when its been set up so recently and is there a sensor that could cause this at all.