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:

    Malfunction
    Malfunction A Check Control message , is displayed in the instrument cluster. The areas in front of and behind the vehicle appear in shaded form on the Control Display. PDC has failed. Hav ...

    General information
    Lamps and bulbs make an essential contribution to vehicle safety. The manufacturer of the vehicle recommends that you entrust corresponding procedures to the service center if you are unfamilia ...

    Requirements
    The installed BMW Assist system is logged in to a wireless communications network. This network must be capable of transmitting the services. To transmit position data, the vehicle must ...