Cold start N52 engine without MAF | ISTA read and delete fault memory | INPA live data

I try to find right way how to fix vacuum leak in my air intake system = N52 engine.

I HAVE TRYIED DISCONNECT MAF sensor. Cold start was much better wihout misfire or rough idle. It means vacuum leak in the air intake system.
Every 300km it has fault code 2D06 (P1415)
Without MAF the drive was smooth running.

After MAF connect, drive was unstable.

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