1. The Turbo Forums - The discussion board for both hard core and beginner turbocharged vehicle enthusiasts. Covering everything from stock turbocharger cars, seriously fast drag racers, boats, motorcycles, and daily driver modified turbo cars and trucks.
    To start posting in our forums, and comment on articles and blogs please

    IF YOU ARE AN EXISTING MEMBER: You can retrieve your a password for your account here: click here.

What's the next step up for an EFI pump from a GSL392 (walbro 255)

Discussion in 'EFI Tuning Questions and Engine Management' started by furious70, Nov 22, 2013.

  1. furious70

    Joined:
    Dec 11, 2007
    I haven't taken it apart yet to see why, but I'm losing fuel psi anytime I go under heavier load/higher rpm, even if I'm not into boost, and my GSL392 gets noticeably louder after testing. I don't need to support more than 450-500hp and I'm still using OEM 3/8 fuel line but would buy up a little if it made sense.
    Thanks
     
    furious70, Nov 22, 2013
    #1

  2. TurboNova

    Joined:
    Jun 18, 2004
    We have been using the pump that comes with the new FAST EZ EFI 2, it is a gerotor in tank pump that is pretty bad ass. Way better than the old 255 pump. The newer Holley pumps are pretty good also.
     
    TurboNova, Nov 23, 2013
    #2

  3. furious70

    Joined:
    Dec 11, 2007
    I should have said I'm running an external pump.
     
    furious70, Nov 23, 2013
    #3

  4. Chuck L

    Joined:
    Apr 6, 2011
    Tank vented correctly??
     
    Chuck L, Nov 25, 2013
    #4

  5. furious70

    Joined:
    Dec 11, 2007
    Factory 4 vent tank with stove pipe in the trunk. This pump lasted a couple years.
     
    furious70, Nov 25, 2013
    #5

  6. philly

    Joined:
    Mar 21, 2014
    bosch 044 and dont look back
     
    philly, Apr 22, 2014
    #6

  7. TA153

    Joined:
    Apr 1, 2013
    id check for voltage drop before swapping, but 044 seems best choice if you do
     
    TA153, Apr 22, 2014
    #7

  8. CW25

    Joined:
    Apr 5, 2003
    I would stick with that pump and just replace it. I ran over 525 at the wheels with one of those. Cheap, quiet, reliable. Pretty hard to beat IMO.
     
    CW25, Apr 28, 2014
    #8

  9. sarg

    Joined:
    Nov 22, 2011
    The new Holley billet pumps are pretty sweet and quiet!
     
    sarg, Apr 30, 2014
    #9
Loading...
Similar Topics - step EFI pump Forum Date
holley efi LSX E85 turbo guys step in!! EFI Tuning Questions and Engine Management Aug 12, 2013
Holley EFI Users, Step Inside Please EFI Tuning Questions and Engine Management Nov 1, 2012
Help - MSPro 2-step settings for building boost via foot brake? EFI Tuning Questions and Engine Management Nov 3, 2021
Loading...