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a muffler delete will run you about $150-$200 and sounds as good (if not better) than most exhausts and will likely have a better hp gain
i've done it on my 328 and 335 and it sounds so good i probably wouldn't spend the money on an exhaust unless i was getting an m car
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13 Carbon Black e70 X5M - 13 Black Sapphire e92 335i - 10 Le Mans Blue e92 335i - 09 Monaco Blue e92 328i xdrive - 07 Sparkling Graphite e92 328xi
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