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Thread: FMU Intake, group Buy

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  1. #1
    Registered User yokust's Avatar
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    Jan 2010
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    Colorado
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    Quote Originally Posted by fluidmotorunion View Post
    The pipe remains at 2.75" from the MAF all the way to the manifold that connects to the turbo. Since the ID of the piping continues to decrease all the way to the turbo, to step it back up would be basically pointless. Even though the ID of our piping is exactly similar to OEM, and utilizes the OEM manifolds, if we were to try to connect these specific airboxes to the OEM MAF piping, we'd hit the hood and run into fitment issues like crazy. So as a result, to get the airflow to the levels we wanted with the airboxes we deemed best for the given application, we had to fab up our own piping of the same ID.
    Not sure if you got what I meant.

    I understand that the piping is 2.75" all the way, which is good.

    But the OD of that oem MAF is 3.25", So how do you step the pipe back up to that to get a good seal on the oring in the stock MAF manifold/housing whatever you want to call it

  2. #2
    Registered User
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    Dec 2010
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    Plainfield, IL
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    Quote Originally Posted by yokust View Post
    Not sure if you got what I meant.

    I understand that the piping is 2.75" all the way, which is good.

    But the OD of that oem MAF is 3.25", So how do you step the pipe back up to that to get a good seal on the oring in the stock MAF manifold/housing whatever you want to call it
    Sorry about the confusion.

    We use an aluminum sleeve that tapers from the 3.25" to the 2.75".

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