Quote:
Originally Posted by RobBeck
Because the HPFP needs higher pressure on the inlet to do it's job.
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Yup. And when the chamber needs more fuel the hpfp steps up the pressure while the injectors increase their durations. When this happens most hpfp simple can't keep up with the requested pressure and begin dropping pressure which can be seen in the low pressure oscillations. I really hope I am wrong but I think this is a waste of time.