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      01-06-2013, 12:55 PM   #10
Bob Z.
First Lieutenant

Drives: 2013 135i Vert
Join Date: Aug 2012
Location: Palm Coast FL 32137

iTrader: (1)

I have the Berk Race axle-back on my 2013 135i 6MT Convertible and have zero drone no matter what RPM/speed I am driving at, and other than that I just have the BMS single cone intake. I could not see replacing the stock cat back with another muffler (as the Berk Street does) and have no regrets. Actually, I wish it were louder when cruising since I can still hear my wife talking