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      02-14-2013, 10:58 AM   #7
eric@helix's Avatar
Drives: 01 M Coupe, 08 135i, '12 328i
Join Date: Jul 2007
Location: Philadelphia

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Originally Posted by ForgedDistributing View Post
BMW PE + Catless DP
Probably the most refined sound on the N55.
It's a classic.
This. Vanguard sounds great but fits poorly: an installer's headache.
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