I really don't think there's excess oil in the TB, IC or inlet hose. I didn't actually look inside the inlet hose, but it's upstream from the rest so I think I'd see it if it existed.
My theory is that oil is leaking internally in the turbo where the turbo hits the DP and while some stays inside the exhaust tract, some is leaking out the Turbo/DP gasket. When the turbo gets red hot, it burns both internal and external oil. Thing is if oil can leak out that gasket, so would sound. Would I hear an exhaust leak if I had one there?
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