[TonyG]

RarlyL8

>>>Can I assume that all other vacuum needs would be handled the same as in a N/A motor?<<<

Not necessarily all. The fuel pressure regulator might have to be different because you have to raise fuel pressure as you raise boost. Also, the vacuum assist on the brakes will need a check valve (at a minimum) so that you don't pressurize it.



>>>On my old '73T MFI engine there was only 1 vacuum port per bank of 3 throttle bodies.<<<

Same deal on the TWM 3003 series throttle bodies.


>>>Any reason why these would have to be tied together or would they work the same pressurized as they would when normally aspirated?<<<

What do you mean "tied together"? Do you mean both left and right banks? Or do you mean all 3 runners per bank?

In any case, they all need to be tied together so that you get a "smooth" signal to any electronics (such as a MAP sensor) that are measuring engine load (you need all 6 pulses to be smooth), and so that you can get enough vacuum to operate your power brakes, and if you have an IAC (idle air controller)... so you can feed air into the system equally to all cylinders.


TonyG