M is synonymous with BMW's high-performance vehicles.

After comprehensive consideration by today's manufacturers, some accessories on the vehicle are not perfect, such as the head section in the exhaust system.

Replacing the JBOM300 mesh high-flow head section can quickly reduce the temperature of the turbine and engine compared to the original factory, effectively improving the original three-way catalytic temperature, which is easy to block the airflow, and increase the horsepower accordingly. Make the acceleration more linear. Corresponding to the annual inspection, the fault light does not light up