Bosch MAF

[Bruce]

On some yes, other no.
C3 gm ecms use a MAF and then a IAT/MAT sensor as a final trim.
Late Model gms using the AL housings have the sensor in the air stream in
the sensor and the electronics in the MAF sensor use that for the final
answer math.

Hot wire, and hot foil MAFs, measure a thermal loss across the element, not
airflow, Airflow is calculated.   Reversion, humidity, are issues.
Bruce


>   I may be wrong, but doesn't the sensor automaticly compensate for air
temp
> and so give a out put thats proportianal to the mass flow? Or does the ECU
> have to do this?


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