My vacum comes directly from this line on my driver's side charge pipe down to a T by transmission then to both side of both waste gates.
The pressure side of my waste gates comes from turbo up to boost control solenoid then down to a T by transmission then to tops of waste gates.
In addition, make sure all unused ports are plugged. I did not plug H2O ports and I am running boosted performance kit V 2.0
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