Twin-scroll turbocharging

BMW 3 Series / Overview / 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:

    Transmission positions
    D Drive, automatic position Position for normal vehicle operation. All forward gears are available. R is Reverse Select only when the vehicle is stationary. N is Neutral Use in automatic car was ...

    Selecting menu items
    Menu items shown in white can be selected. 1. Turn the controller until the desired menu item is highlighted. 2. Press the controller. Menu items in the Owner's Manual In the Owner's Manual, m ...

    Reference
    This chapter contains technical data, short commands for the voice activation system, and an index that will quickly take you to the information you need. ...