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11-22-2012, 11:34 AM
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#8
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Moderator
Drives: 135i Silber mit/Rot 6MT N54
Join Date: Feb 2010
Location: Bayern, Germany
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All of the exhaust makes very little power. gains of less then ~5 Hp. But they all sound different. You really should listen to a few in person before buying one.
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