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      02-09-2011, 02:24 PM   #65
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Drives: 2015 MW M3/2011 E90 M3
Join Date: Jun 2007
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Originally Posted by aajami View Post
It is made of a different material. Stock exhaust is primarily stainless steel. M Performance exhaust is Inconel and titanium.
Just curious, have we confirmed that? As mentioned before, there are lots of high carbon steels that fit the description of the material. Judging by the heat marks left by the welds, it looks like MiG welds, which are not appropriate for Ti or Iconel. (you need to TiG Titanium)
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