So should I run this optional positive pressure assistance valve on my turbosmart wastegate..reason I ask is I have a 25psi tune but with oem wastegate I can only briefly achieve 23psi and holds at 19-20.
so since I'm targeting 25 psi should I run this assistance port ? If I DO need to run this port , what vacuum/boost source do i tap into ? Would my dedicated boost gauge line work that comes out my aftermarket intake manifold or do i not need to run the assistance port ???

 

Interesting… What do they mean by “positive pressure that the ECU controls”? Sounds like it should be connected to a boost source with a solenoid valve… I don’t think our cars have that. Do you have that wastegate actuator installed? How does it work for you otherwise?

 

have not installed it yet... trying to find full / correct install guide because it's VERY UNCLEAR on how to setup the ports.
Am i running enough boost inorder to run the extra port ?where and what do i run that source off of if I even need to ?
im going to email turbosmart and if they cant give me an answer im sending this **** back..

 

This comment is posted in the FAQ section:
What is twin port control?
The Turbosmart vIWG Vacuum Actuator series has been engineered with a second chamber on the other side of the diaphragm which means you can boost assist. This will require a more advanced strategy and setup; however, directly or via a solenoid, plumbing positive pressure from the inlet manifold or turbocharger will allow a custom, much wider tuning window. What size is the reference fitting? The swivel banjo and fitting in the top cap is a -3AN, and the lower (optional) positive Pressure Assistance Port for Boost-Assist is 1/16NPT.

They make it sound like you can plumb direct from the intake manifold. I'd be curious to see how that works...