Thread: Charge Pipe replacement DIY?
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      09-13-2018, 12:19 PM   #21
E90705
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Drives: E90/F25 M-sport
Join Date: Mar 2015
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The boost pipe/outlet pipe does appear to allow better air flow as the stock rubber was pretty thin as I imagine it may balloon under wot/load.

My guess ftp pipe =2.5 inch vs oem 2-2.25?
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