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1.9tdi air box pipe.

Discussion in 'A3/S3 Forum (8L Chassis)' started by chewy., Mar 17, 2010.

  1. chewy.
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    chewy. Member

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    Have an ITG filter kicking around and am looking at fitting it.
    To the right hand side of the MAF attached to the airbox is a small bore pipe, it leads to a T piece on the bulk head.
    Any idea what its for?
    #1

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