yeh, something is amiss. I found the the intake/exhaust manifold gasket is not quit doing the job, or it is too loose... as there are soapy water makes bubbles present, when the motor is at a fast idle..

So that means there is some back pressure in the exhaust system.. so I put a boost gage on the intake ALDA line, and found vacume. What The Heck? a vacume, with the woosh of turbo noise? check the wastegate? I did not touch it, although I did disconnect the hose, it should only be opening when there is too much boost right? and that would still produce a little boost I would think. turbo is turning too slow? It seems to turn freely by hand.. wonder what else could cause a vaccume.

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46 WDX Power Wagon

84 300TDT daily driver