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      08-12-2012, 03:49 PM   #23
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Drives: E92 M3
Join Date: Mar 2012
Location: NOVA

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Originally Posted by m3alabama View Post
anyone else have trouble with the exhaust vibrating against the black cross member brace? I could not get mine to work and had to take it off. I don't track my car or really ever throw it into any stressful turn so not a big deal but still bugs me a bit. Not enough to give up the HFC's-man that sound is so brutal
I think I'm having the same problem. Another member here suggesting putting a washer or two under the brace to provide a little space. It worked for him, I'm going to give that a shot.
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      08-13-2012, 08:40 PM   #24

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I am amazed at what I am reading! To start with the HFC or straight pipes have the ability to be rotated , 360 degrees if the tunnel would allow, if this alignment is wrong all exhaust from that point back will be less than suitable. The E9x exhaust fits so tight that there is no room for error on install. I have installed many of these, had them off and on for other work and NEVER had a rattle, vibration, hanger missing concern or anything of the sort. The HFC sits low, nature of metal matrix cats, they are round not oval.
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