Is this just a waste of money if I have the base audio system + a bav ghost sub?
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2015 ///M235i | Alpine White | 8AT | RW Carbon Front & Rear Lips | Autotecknic Paddles | MP Side Decals | AWE Axelback | Shifteck DP | MHD Stage 2+ | BMS Intake | FTP Charge Pipe | VRSF FMIC
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