Okay, well i'm still not very clear on this.
I understand that in a 6L it has all these sensors and computer commands to tell the turbo what to do, but i'm not interested in that. I'm interested in how the turbo physically is changing the flow of air inside ofit. On that banks link it says it changes the exhaust flow but i don't really understand how.
When the 6L computer commands the turbo to do something, what is the computer actually telling what to do, is it a hydralic pressure regulator?
But, say i have a variable geometery turbo sitting on a table, what actually needs to change for it to be variable? Is there a hydralic pressure line that runs to it and variable pressures change whatever changes the vanes inside of it? I'm pondering how i can use one of these turbos for a project of mine.
I'm thinking i'd basically need the turbo, a hydraulic pump, and some sort of hydraulic regulator to control pressure going to the turbo. But i need to know the pressures and all that mess. So anyone know? Am i right in thinking that's all i basically need?