E46Fanatics - View Single Post - How to clean the mass air flow sensor??
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Old 04-04-2013, 09:28 PM   #57
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Join Date: Feb 2013
Location: San Diego
Posts: 3
My Ride: 2001 330i
Can you spray the cleaner in both directions to clean the MAF? A guy at Napa told me to only spray it in the direction of airflow indicated by the arrow on the MAF. I'm sure it wouldn't hurt to be more careful rather than not, but I also want to get that bitch clean!
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