Yes, they do the same thing. MAF is "mass airflow sensor" and HFM is "heated film mass sensor".
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1995 325I, tinted windows, K&N, debaffled air box, BMW style #104 wheels, Nighthawk low beams, smoked side markers, smoked corners, smoked taillights, M3 style heated mirrors, various interior bits, Bosal cat-back
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