Thread: AR downpipes, pronounced whistling / hissing noise accelerating at 75+mph?
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      12-10-2011, 03:40 PM   #3
J3NGOe90
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Drives: e92 335i 6speed MT only!
Join Date: Jul 2011
Location: brooklyn

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with AR downpipes turbo spool gets louder and 335 drivers actually like it!
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