Thread: Jb4
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      02-25-2019, 02:09 PM   #2
DaveXRS
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Drives: 2012 135i M-pack
Join Date: May 2016
Location: Montreal

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I have installed my JB4 a while back; I don't have any issue and very happy with it. The only thing I strongly suggest is to replace your charge pipe. The stock one is plastic and is prone to failure under increased boost.

People will however tell you to get MHD instead. I don't have MHD experience so won't comment.
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