I have a turbo on my car and when I plug in my map sensor(with missing link) a whole bunch of black smoke comes out, if I leave it unplugged the smoke is less. I have a v-afc that is untuned, what could be the problem?????

 

give us some more details on your setup.

you could be running the afc hack in place of the missing link.

black smoke - unburned fuel.

 

well, I have a 2000 gsr cylinder head, a nitrous sanwich plate, stock injectors, aem fuel regulator, fuel rail, when I leave my map sensor plugged in there is no check engine light. and just an hour ago, I was driving and the car would feel like if it was misfiring(shaking), so I checked maybe a spark plug wire came off, but they were all in place.

 

rich as richy richy. whayever you changed from the beginning is the problem.