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      09-27-2010, 04:32 PM   #38
cstavaru
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Drives: 2009 335i M Sport Sedan 6MT
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Quote:
Originally Posted by kirby135i View Post
they are 3" but i think they drop to 2.5" closer to the turbo than ARs?
Yes and in fact I think it's better like this. The gradual transition is better for the airflow. The AR and Macht Schnell are made with abrupt transitions just for marketing brag.
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