The problem that i am having is when i try to start the car with the MAF Plugged in it wont start and if it does it will studder and misfire and eventually stall. There is black smoke coming out of the exhaust which leads me to think it is way to rich. When the MAF sensor is unplugged it runs fine still really rich but atleast it runs. Replaced the MAF sensor and that was not the problem. Any suggestions would be greatly apreciated thanks.

Luke