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airbox plug??

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    airbox plug??

    anyone know what this is?? i want to make a cai and idk if i need this?

    #2
    If you are expecting power gains from a CAI you will be disappointed. The stock airbox with a clean filter is as good as it gets.
    The car makes it possible, but the driver makes it happen.
    Jim Levie, Huntsville, AL

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      #3
      yea ive been reading things like that, i was just looking for an easy project to do. I found out its the air pressure sensor, do i need it??

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        #4
        it probably helps to keep it.
        -Paolo
        1986 325e RIP.
        1989 525i
        1986 635CSI

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          #5
          where could i mount it with a cone filter?

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            #6
            i noticed mine is unplugged. Have been running it that way for years. No adverse affect so far. I'm assuming it's for when you hit higher altitudes so the ECU can adjust.

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              #7
              i just put it next to the headlights. its just sitting loosely in there but it never moves anywhere
              -Paolo
              1986 325e RIP.
              1989 525i
              1986 635CSI

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                #8
                thanks for the info

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