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      09-20-2013, 11:38 PM   #20
f32458
Second Lieutenant
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Drives: E90 M3
Join Date: Jul 2011
Location: Santa Monica

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Quote:
Originally Posted by JAM3S View Post
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I can ask them on Monday. Did you had the Eisenmann mufflers or the x pipe? I had the Akra Evo on the E90 and it droned badly from 1k ~ 3k and vibrated my rear windshield at cold start. ( maybe bad installation? ) The gains were very nice though. Did your Eisenmann drone? Our cars drone even in stock platform at 1900 ~ 2100 rpm. Both E90 and E92 has the same minor issue imo. So there's no surprise if other aftermarket system has drone in the " ghetto " area. Did you felt any gains with your Eisenmann?
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2011 E90 DCT, sold
2011 E92 DCT ZCP | Akrapovic full setup | Evolve stage II | OEM grille | splitter | spoiler