Try checking your exhaust side for leaks if you haven't yet man. Sometimes having a real bad exhaust leak can cause your idle to be rough. And you not making enough boost might connect to that too. Check the whole thing. Maybe your cat is clogged if you still have it too. That could do that too. Check the gaskets on that side. The turbo for exhaust soot, and oils, turbo manifold. You know the drill...thats assuming if you have done it or not man. Best of luck to you. I'm having issues too.
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