Thread: FS: Groupe M Titanium E92 Exhaust
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      01-19-2010, 05:08 PM   #18
Fen335i
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Drives: e92 M3 / X5d / Z4 M Roadster
Join Date: Jun 2008
Location: Pacific Northwest

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Anybody know the perf gains with this? I couldn't find much on GruppeM's web site nor searching on this forum...
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