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      09-04-2012, 03:34 AM   #4
slicer
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Drives: '13 E92 M3
Join Date: Jan 2009
Location: San Diego, CA

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I think you should add akrapovic to the list. You will however probably want the full evolution system (high flow cats which require a tune or code deleters) to get the sound you want. I did so and have no regrets. Sounds aggressive and no drone IMO. You will have no performance gain without getting a full exhaust.
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