93' 3rd gen (converting to t04s single)

If you follow the fuel pres reg line coming off the selenoid, you will find it terminates at the intake manifold (near the oil sprayers). Now, if you move 6 inches toward the front of the car along the same manifold (from this point), you will find another vac line nipple.. WHAT IS THIS LINE, Where do i connect it?

To confirm: If you draw an imaginary line from the rear oil sprayer to the front oil sprayer, the mystery nipple would be near the imaginary line extended off the front oil sprayer.

Thanks all, Troy

 

It originally connected to "Y" pipe outlet just below where the air pressure tank connected to. It supplies air to the primary injector air bleed sockets.

 

When you go single you cap those oil sprayers....