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My stock sound does make burble sounds when I'm in manual and do downshift. Okay, I'm just curious about it though since I'm quite sure that it doesn't sound to different since it has nothing to do with the exhaust system.
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2011 JB E82 135i - Premium pack | Value pack | Premium sound | Sport pack | M-Sport steering wheel and suspension | Blackline LCI tail | BMWP carbon spoiler | BMWP CF license frame | BMWP gloss black grilles | Meisterschaft GT w/gloss black tips | CF diffuser | CF splitters | Hyper Black Apex Arc-8 w/Potenza RE-11 | Dinan camber plates
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