I currently own 1993 Audi 100 CS Quattro 2.8L V6 while checking the hoses from the cylinder head cover to the intake. I noticed a group of three smaller vacuum hoses coming from the Mass Air Flow. I know two of them go to the intake manifold change-over vacuum servo and EGR Valve. Does any one have any ideas where the third should be connected?

 

check the vacuum hose diagram, should be on the inside of the hood.