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      12-06-2012, 03:37 PM   #16
Private First Class

Drives: BSM 1M, N55, KW's DDC
Join Date: Jan 2012
Location: Brussels

Posts: 119
iTrader: (0)

Totally agree with the previous post: on my car, the N55 mid-pipe has seriously reduced the drone. Under some combinations of temperature and atmospheric pressure, the drone comes back a little, then disappears again. A bargain mod !!