Plumbing diagram needed

Mid_Life_Crisis

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2007 MS3
Does anyone have, or know where to find, a free (or dirt cheap) diagram of the boost control system for the MS3? I started to install an MBC last night and stopped when I realized that I really don't know what the different hoses are doing. The only information I have is "connect this hose here" and "cap this nipple" kind of thing. I do not like working that way. I like to know what I am doing and why. For example, there are two ports on the factory wastegate controller. Do they perform different functions or are there two simply to avoid putting another tee in the plumbing? What are all the different ports on the wastegate solenoid for? I want to know this system before I start screwing around with it.
Thanks in advance guys.
 
I could be full of s***, but the way I understand it is this: The stock wastegate (bottom nipple acts as the inlet from the compressor, top nipple acts as an outlet). The bottom to top nipple are straight through. The hose running from the top nipple to the factory solenoid allows the ECU to use the solenoid to bleed boost from the wastegate. The other nipple on the factory solenoid that connects to the intake pipe (the short hose) bleeds this air back into the intake tract. Therefore I believe the stock system operates like a "bleeder" style fashion. I could be totally wrong and full of rubbish, but from the research I've done and my understanding, I think this is what is happening here.
 

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