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Compatibility, real gains, sound: what you need to know before choosing.

  1. 11 min BMW 335i N54 E90 / E92 / E93: the tuners' twin-turbo, the exhaust guideSaloon, coupé or convertible, the 335i N54 left its mark with a twin-turbo inline-six of typically BMW smoothness, able to pull hard at any engine speed....
  2. 11 min BMW 1M N54: the biturbo straight-six that makes the 1M, the exhaust system guideOffered in 2011 and 2012, the BMW 1M is a widened 1 Series coupé, with suspension and brake components borrowed from the M3 and a 3.0-litre...