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Thread: C7 Corvette No Pressure New LT4 HPFP

  1. #1

    C7 Corvette No Pressure New LT4 HPFP

    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
    2008 Corvette
    UPP Twin turbo T4 67mm BB billet wheel kit
    427 LME Billet Setup
    Fore Innovations Triple 465 L4 Setup
    FIC 2150 injectors
    RPM TH400/9 inch
    Pro Torque Bolt Together Converter
    MaxxECU Stand Alone

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  3. #3
    That's gold baby! One damn table. Stupid 2014 keep the peak duration table stock. I even looked at that one and almost changed back on my own. Go with your gut.