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      01-19-2022, 08:16 AM   #9
Alpine-F80
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Drives: 2017 M3
Join Date: Sep 2018
Location: Northern Virginia

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Quote:
Originally Posted by f80313 View Post
All fixed, guys! It was one of the hangers that was hitting the midpipe. Not the gasket, not the brace. The hangers.
Following up here -- think I just had the same issue. Was it the exhaust hanger closest to the DP (with black rubber, not red)? I had rattling stemming from here as well. I saw the metal on the hanger was touching the top of the arm that's welded to the midpipe to attach to the hanger so I assumed I had installed the hanger backwards as it was able to bolt in 2 ways.

But after uninstalling the midpipe and reinstalling the hanger the opposite direction it still makes contact. So I'm starting to think the issue is the location/size of the arm welded to the midpipe, if it was like 1/4" lower it wouldn't be an issue. I'm planning to grind down part of it next time I'm down there, for now I left that hanger off as that one seemed to be the "least important" of the hangers at least. Guess we'll find out..
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