Here is the mass air flow sensor (MAF)/air flow meter (AFM), which "lives" between the air cleaner and turbocharger. I didn't like it, so I ripped it out. It has a door inside which gets sucked open when the engine draws in air, but they can stick and choke the engine. I also suspect it might delay acceleration.


Here is its replacement--a $7 exhaust pipe extension from O'Reilly Auto Parts. One end of it is 3" in diameter, and the other end is 3 1/8" in diameter, which is close enough to the size of the part it's replacing, which has ends that are different sizes. I cut it down to 185mm or 7 1/4" long to match the length of the original part.


I robbed the nuts from the ARV vacuum transducer to use on the frame of the mass air flow sensor...


...to hold it together with the mass air flow sensor removed from it. This is needed as it's also the air cleaner mounting bracket.

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1967 W110 Universal Wagon, Euro, Turbo Diesel, Tail Fins, 4 Speed Manual Column Shift, A/C
1980 W116 300SD Turbo Diesel, DB479 Walnut Brown, Sunroof, Highly Optioned, 350,000+ Miles