If the drone is the issue, I've heard RPi's exhaust drones like crazy. I love my Active Autowerke exhaust. Very unique low growl/high pitch exotic sound and barely any drone!
2015 AB/SO F80 ///M3 6MT | 19" Black M437 |
GONE 2011 SG/Blk E92 ///M3 CS 6MT | CF kidney grills | IND SG painted side grills w/ tinted lenses | Painted bumper reflectors | TMS 90mm stud kit | Rear fog light mod | Active Autowerke exhaust |