[amrazM]

the pump in tank is variable between 3-6bar, the sensor under the hood reports data to the dme which sends it to the ekp to control the pump. if the can line is broken the pump will run at full speed, does the car have any bus related faults? also have you flashed the dme? what was the car doing before this happened? I would look at the ekp, there is functionality in ista to test the fuel system.