When required, the system takes only fractions of a second to build up maximum operating pressure in the Efficient mode and thus deliver maximum torque to the rear wheels. (bmwblog.com)
Should I be concerned about these low operating pressures, given my starting ambient temperature? (mechanics.stackexchange.com)
The common rail injection system has also undergone further development: it has a maximum operating pressure of 2,000 bar and can therefore inject fuel in an extremely precise spray pattern. (topspeed.com)