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:
2011 BMW 750 Review by David Thomas
As the 2010 7 Series ebbs into the 2011 with few changes, I spent some time
driving the 750Li xDrive. That's BMW's long-wheelbase, all-wheel-drive version
of its flagship sedan.
While I was impr ...
Activating/deactivating the functions
Several menu items are preceded by a checkbox.
It indicates whether the function is activated
or deactivated. Selecting the menu item
activates or deactivates the function.
The function is acti ...
At a glance
1 Control button
2 Mirror display ...