Atomic, in the KE-III system the mass-airflow sensor does not look anything like what you pictured. Remember, this is a CIS injection system which is mechanical at heart. The MAS does send an electronic signal to the lambda control system, but it also mechanically controls the fuel system pressure in the fuel distributor. In the '93 190 it is located directly under the fuel distributor and air cleaner. If you remove the three bolts holding the air cleaner to the engine, disconnect the breather hose and intake temp sensor, the air cleaner assy will lift off - exposing all.