2014 C7 P1SC otherwise stock just installed new GM LT4 HPFP, LT4 Injectors, DSX AUX fuel Pump, DSX Flex Fuel Kit. You can see the pressure is there on startup and then its gone and then it will kick out REP and codes P0089 & P228C. Log and tune Attached. I'm looking at maybe a bad HPFP
NoPressureHPFP.hpl E85.hpt