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I am considering this as well with my 2015 335i X-drive M Sport. Is this something a regular Muffler shop can do or should I bring it my local BMW guy and spend a bit more?
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2015 335i X-drive, Black Sapphire Metallic, M Sport package LOADED. MPE/VRSF Charge Pipe/BM3 Stage 1 93 Octane
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