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just more output... no negative consequences.. the stock exhaust is fine for 400+ hp... i too like the tone of the stock exhaust.
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2009 BMW 335i Sedan / Auto / Paddles / Sport / BMW Assist / Heated seats / JB Matte Black Grill / Tischer First Aid Kit w\Triangle / Tischer Hood Pad / "Custom" rear fog switch <---- SOLD!!!!
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