I tried searching but couldn't find my answer. I'm currently trying to run my vacuum lines for my dual port wastegate/boost solenoid, and may be overthinking it. I've referenced the efr boost solenoid diagram and the turbosmart vacuum diagram. I've attached some images for reference. Please send help, my head hurts.





So what I'm thinking:
green line = vent to atmosphere
red line = top wastegate T into the inlet port alongside the turbo vacuum line
blue = bottom wastegate connected to the outlet port

 

With an internal wastegate, it's easy to see the arm move when the boost control solenoid and wastegate actuator are doing their thing. If you have an air compressor and some time to geek out on science experiments, disconnect the compressor outlet hose from the turbocharger and use your compressed air to feed the boost control solenoid. If the ECU lets you adjust the boost control duty cycle manually, you can watch how the duty cycle affects the wastegate arm movement. If you want to get crazy you can tee off a cheap boost gauge and watch the actual pressure going to the bottom port on the wastegate actuator.