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      05-26-2011, 08:39 AM   #2
jzbm3's Avatar
Drives: '11 X5 50i M Sport
Join Date: Jan 2011
Location: Denver, CO

Posts: 1,142
iTrader: (31)

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FYI the ringing noise is only present with a catless x-pipe (not sure about HFCs). The axle-back sounds great if you stick with the OEM x-pipe.

Bump for a great exhaust.
Current: X5 50i // Space Gray // M Sport
Past: E90 M3 // Jerez Black // 6MT
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