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
The 135i's turbocharged inline-six makes 300 horsepower and 300 pounds-feet
of torque. It works through a six-speed manual or BMW's seven-speed dual-clutch
automatic. Either car hits 60 mph in abo ...
Text messages
Text messages in combination with a symbol in
the instrument cluster explain a Check Control
message and the meaning of the indicator and
warning lamps. ...
Initiating an Emergency Request
1. Press the cover briefly to open it.
Initiating an Emergency Request
2. Press the SOS button until the LED in the
button lights up.
▷ The LED lights up: an Emergency Request
was initi ...