I have the standard system in my MY09 e90. I am deaf in one ear and I can tell that this system is sub-par. Now you'll have to refer to above as to what changes have been made since I bought mine, but if music sound quality is important to you I would do your research carefully.
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Cobb E40 PROtune by Jake@PTF/RR catless DPs/aFe DCI/ETS 5" FMIC/ER CP/Forge DVs/Alpina B3 TCU flash/BMW Perf. Exhaust./BMW Performance Style 313s/M-Tech Rear
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