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:
Entering letters and numbers
1. Turn the controller: select letters or numbers.
2. Select additional letters or numbers ifneeded.
3. "OK": confirm the entry.
Symbol
Function
Press the controlle ...
HD Radio™ reception
Many stations broadcast both analog and digital
signals.
License conditions
HD Radio™ technology manufactured under license
from iBiquity Digital Corp. U. S. and Foreign
Patents. HD Radio™ and ...
Air volume, manual
To be able to manually adjust the air volume,
switch off the AUTO program first.
Press the left or right side of
the button:
decrease or increase air volume.
The selected air volume is shown ...