Twin-scroll turbocharging
The new four-cylinder engines also feature twin-scroll turbocharging. This means that the exhaust stream from cylinders 1 and 4, and the exhaust stream from cylinders 2 and 3, follow separate spiral-shaped paths to the turbine wheel. This reduces exhaust back-pressure at low engine rpm, allowing the energy of the exhaust gas pulses to be utilised as efficiently as possible. The result is instant throttle response and fast-revving performance which BMW drivers can instantly translate into driving pleasure.
See also:
Changing the map section
"Interactive map"
To shift the map: move the controller in the
required direction.
To shift the map diagonally: move the controller
in the required direction and turn it.
...
Only refill the diesel exhaust fluid
yourself in exceptional circumstances
To be able to reach the nearest service center
with your vehicle, you may refill the diesel exhaust
fluid yourself, making sure to heed the
warning notices specified below.
Handling diesel ex ...
Tilt alarm sensor
The tilt of the vehicle is monitored.
The alarm system responds in situations such
as attempts to steal a wheel or when the car is
towed. ...