If you turn your RPM and Boost off in the graph and then turn on your Low pressure fuel sensor and your Rail pressure they are essentially the same .. doesn't look like your HPFP is working - it should be far above the LP reading.... maybe at a minimum of about 1500-2500?
Are you getting any codes and have you double checked the connections to your HPFP? I dont think your injectors have enough pressure to fuel the cylinders.