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:
First aid kit
First aid kit
The first aid kit is located in the cargo area in a
storage compartment.
Some of the articles have a limited service life.
Check the expiration dates of the contents regularly
a ...
Under the Hood
The 640i is powered by a 315-horsepower, turbocharged 3.0-liter six-cylinder
engine. Its peak torque rating is 332 pounds-feet. BMW cites a zero to 60 mph
time of 5.5 seconds for both the coupe an ...
Arming and disarming the alarm
system
General information
When you lock or unlock the vehicle, either with
the remote control, Comfort Access or at the
door lock the alarm system is armed or disarmed
at the same time.
Door lock an ...