Boost controller vacuum routing for twins?
 

Which one of these would you guys recommend? Im running an AEM true boost with a single 3 port solenoid & they don't show any diagrams with a twin set-up. Not sure how the first one would be able to let me up the boost with the tops of the gates vented. Thanks!

I prefer the diagram on the right. My twin set up was plumbed like that. It would make 10psi on the gates and I could get 25-26psi at only 60% DC on the controller.

Sorry, my screen shows top/bottom pics. So if you're saying the one on the right, would that be the one that has the solenoid out going to the top of the wastegates?

Correct. Solenoid regulates the air going to the top of the gates.

Awesome, thanks for the help!

The config with the top chamber open to atmosphere is the simplest method of boost control. Unless you need a wide range or a lot of boost, then this is by far the easiest option.

And there is no reason any part of the boost control system should ever see vacuum

It doesnt need to add pressure. The spring is there, unless it was an incredibly poor setup with huge EGBP then the spring is doing the job it is designed to do. It would require a lot of force in the exhaust manifold to blow open the gates valve against spring pressure alone, often far far more than 10psi.

You would only need to add pressure to assist the spring if your setup needed that.

Same applies with any form of control, manual or electronic, doesnt matter.