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      07-16-2014, 03:11 PM   #2
HX_Guy
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Drives: 2014 BMW M235i
Join Date: Jul 2014
Location: Phoenix, AZ

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I've been wondering the same thing. From what I've gathered, the only thing you get out of it is better sound, but it does tend to drone somewhat which is a negative. Also, the sound is really only noticeable from outside the car (to others) but from inside, there isn't much difference (if any with the windows rolled up).
Appreciate 0