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:

    Strength of the driver's and frontpassenger airbag
    The strength with which the driver's and front passenger airbags are triggered depends on the position of the driver's and front passenger seats. To maintain the accuracy of this function over ...

    Pairing/unpairing mobile phone
    General informationThe following functions are available: > Using the mobile phone as a telephone. > Using the mobile phone as an auxiliary phone. > Using the mobile phone as an audio sour ...

    Roller sunblinds for the rear side windows
    Pull out the roller sunblind at the loop and hook it onto the bracket. Do not open the window while the roller sunblind is raised. Do not open the window while the roller sunblind is raised ...