WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
FUEL PUMP WITH DRIVE AND PIPE SPECIFICATION
Fuel pressure when starting
bar
5.55 - 6.85
At idle approx. 800 RPM (engine at normal operating temperature)