Joy oh joy,
Took the car down for a wash today and noticed on my way down 10 minutes into my drive that the car was not getting full power with decent throttle. Seems to idle fine and not rough so is only under load. Also have noticed under heavy acceleration quiet a lot of dark/black smoke comming from the exhaust only whilst driving. Have scanned for codes and have nothing in there at the moment. Thought it would have grown a code after driving for 1/2 an hour but apparently not. Only other thing I have done recently is disconnected the battery yesterday and reconnected.
Any suggestions on where to look