Hi guys, a little bit concerned about my car chucking out smoke, it sometimes smokes under hard accelleration and sometimes smokes when your in a high gear and not using to many revs and just changing through the gears. The smoke is a blue/black colour. When the car is stood still you can rev it and it doesnt kick out anything, it only kicks out smoke when you are in gear. I also had the exhaust off today and noticed that when you put your fingers on the inside there was condensation and seemed abit oily, not much but your fingers were black when you ran them along the inside of the exhaust. I had a remap about 4000 miles ago and i never noticed the smoking before this!! Is this normal? The car is running sweet as a nut and no problems at all with it. Its just the blue/black smoke that is worrying me and its not really thick smoke its quite faint when you are driving and more of a bluey colour.
Should i be worried????
Would really appreciate some advice on this.