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      08-02-2017, 03:31 PM   #31
akuan99
Second Lieutenant
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Drives: 2015 228i M-Sport Track 6MT
Join Date: Sep 2014
Location: Plano, TX

iTrader: (0)

I just had comm box replaced and dealer had to update ECU (at least that is what they told me) and no issue with having aftermarket amp installed.
I saw a lot of improvements with this upgrade.
BT streaming audio quality is much better.
I also felt improvement on adaptive suspension and throttle response ping in comfort mode.
Appreciate 0