i have a missing link and my map sensor keeps throwing a code.

i have a v-afc aslo, i heard that there is a v-afc trick for the map sensor

 

Do you have the AFC set to add fuel anywhere? If so, is it above +10-12%? If the answer is yes, the additional 10-12% voltage that the AFC adds to the MAP is enough to trigger a MAP code. This will happen even if you have a Missing Link, since the AFC is adding to the MAP signal electronically, where as the Missing Link manipulates the amount of pressure the MAP sees physically.