C20XE Throttle Bodies Vacuum

[projctnova]

Hi im running throttle bodies on my c20xe but I have been told that the vacuum pipes that come off each throttle body will not supply enough for braking for my servo. I was told that each throttle body would suck the air from each of the others therefore not giving me full braking force.

Is there a way round this? Ive thought of either one way valves on the vacuum pipes or link all the pipes up to a vacuum cylinder that would store enough for when I need my brakes.

Anyone else running throttle bodies had this problem?

Thanks

Richard