throttle body pressure source

[blktalon3]

Here in couple days I'm going to be switching to DS-map for tuning. I'm wanting to use the port on the intake manifold that my bov is tapped into now for the map sensor and move the line foe the bov to the throttle body. I've heard of people tapping one of the ports on the throttle body for the bov, and I was wanting to know which port I could use.
Thanks