Originally Posted by
DriftingDJ
So I need to I have it hooked up to my intake like stock breathing? Please explain why I would want to do that and why it would increase efficiency. BTW my crankcase line is blocked off.

Yep. Post-filter, pre-turbo.
From my understanding it helps pull down the pistons on the power stroke and removes blowby better.
Here's what I got with a quick google search:
The Pros and Cons of Racing Vacuum Pumps