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      01-02-2012, 05:53 PM   #121
byoung8's Avatar
Drives: 2007 335i E90 TiAg
Join Date: Sep 2010
Location: San Deigo

Posts: 227
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Originally Posted by bmwe82 View Post
what size are those DMH cutouts? Why not mount them before the cats and resonator? Are they electric?
I think they are 2.5" and dual low profile. There was no room to mount any closer to the turbos. So my installer made the decision to put them where they are now and mentioned something about a possible pull effect like an X pipe, but not sure how much of that is plausible. They are electric

'07 335i E90 Titanium Silver
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