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fuel pressure

Discussion in 'EFI Tuning Questions and Engine Management' started by racerron67, Mar 17, 2014.

  1. racerron67

    Joined:
    Feb 17, 2014
    what is the average fuel pressure most people run with electronic fuel injection
     
    racerron67, Mar 17, 2014
    #1

  2. Matt Cramer

    Joined:
    Sep 29, 2006
    This depends on the injectors; it's usually 43 psi for most of them...
     
    Matt Cramer, Mar 17, 2014
    #2

  3. racerron67

    Joined:
    Feb 17, 2014
    if you have larger injectors you run more psi or less psi I have 160 pound injectors.
     
    racerron67, Mar 17, 2014
    #3

  4. Jeremy

    Joined:
    Jun 6, 2005
    Ford is 39psi, gm is 43psi. The injector flow rate is based on this pressure. So a 39lb ford injector would equate roughly to 42lbs on a gm pressure etc.
     
    Jeremy, Mar 22, 2014
    #4

  5. 64duece

    Joined:
    May 7, 2003
    Typical is 43 but you can adjust to your specific combination. If you have issues idling, you can lower the base abit.
     
    64duece, Mar 23, 2014
    #5
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