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:
Under the Hood
BMW's inline-six-cylinder engine makes 230 horsepower and 200 pounds-feet of
torque in the 128i. It works through a six-speed manual or a six-speed
automatic. The automaker says a stick-shift 128i ...
Closing the trunk lid
Drive with the trunk lid closed
Only drive with the tailgate closed; otherwise,
in the event of an accident or braking or
evasive maneuvers, passengers or other road
users may be injured or th ...
Instrument lighting
Adjusting
The parking lamps or low beams
must be switched on to adjust the
brightness.
Adjust the brightness using the
thumbwheel. ...