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    Does the small black box on top of the stock airbox have any sway in air control? I just realized mine was missing and I have a misfire that has started. Wondering if that could be related before I tear through the spark plug-wire-rotor cap side of things.
    Thanks all!
    Nick
    No antenna? I sell plugs!

    Here: https://www.r3vlimited.com/board/sho...77#post4937877

    #2
    Originally posted by Nick's e30 View Post
    Does the small black box on top of the stock airbox have any sway in air control? I just realized mine was missing and I have a misfire that has started. Wondering if that could be related before I tear through the spark plug-wire-rotor cap side of things.
    Thanks all!
    Nick
    The black rectangular plastic cover (w/ BMW logo) houses the air filter has no sensors in them. Its the silver device after the airbox that has a black square plastic cover that is the potentiometer / sensor, but I don't think the AFM would be a concern just yet as the backfiring sounds more like a spark-related issue as you've mentioned. Just include the ignition coil in the list...

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