BMW F97 X3M Competition Stock Muffler sound with RaceChip GTS Black.

Details on the car.

2020 BMW F97 X3M Competition:

- Charcoal filter removed
- 2000 miles on the engine
- RaceChip GTS Black with App on Map 7 - http://bit.ly/2u3m7OP
- HP 510whp / 500wtq or 619hp at the crank.