Results 1 to 6 of 6

Thread: n/a 2018 Camaro SS lpfp running out of fuel

  1. #1
    Potential Tuner
    Join Date
    Feb 2021
    Posts
    3

    n/a 2018 Camaro SS lpfp running out of fuel

    Hello all. fyi, I am new to this and I am not a professional tuner.

    with that said I have a 2018 Camaro 1SS FBO, H/C (cam has 32% fuel lobe with LT1 stock hpfp) and flex fuel (currently running e75).

    My injector ms is 4.7 at WOT, desired fuel rail pressure is at 2529 and it is giving out 2793. So I feel it's safe to say that I am good in the rail, injector and hpfp areas which leaves me to think I am losing pressure in the low side pump. It is requesting 73 psi but is only dishing out 54psi at WOT. It is currently a stock lt1 lpfp. AFR is between 14.6-15.4 at idle, and will drop down to mid 12's or 13's at WOT.

    my ask is that someone please take a look at the log or the screen shot and see if i am indeed running out of fuel. Everyone keeps telling me I am ok, but then I read post on here and other sites that I shouldn't be running out of fuel still being N/A. Car only made 520 on a dynojet. I have a few more mods I want to add but I need to get this squared away first. Any information would be greatly appreciated.

    Keep in mind, I updated the lpfp voltage from 15.5 to 16.5 just before this pull to see if it would help but it didnt. Prior to that it was still only only giving 54 psi. And yes I have contacted my tuner but have not heard back in a while.
    Attached Images Attached Images
    Attached Files Attached Files

  2. #2
    Senior Tuner
    Join Date
    May 2003
    Location
    South FL
    Posts
    1,377
    You're running out of low side fuel.
    [email protected]
    Owner/GM Calibrator
    Gen V Specialist - C7 Corvette, Gen6 Camaro & CTS-V3

  3. #3
    Potential Tuner
    Join Date
    Feb 2021
    Posts
    3
    That?s exactly why I assumed. So either add an auxiliary or LT4 low side pump

  4. #4
    Senior Tuner SultanHassanMasTuning's Avatar
    Join Date
    Nov 2009
    Location
    All Around
    Posts
    3,149
    why are you requesting that high of HPFP, if your NA you dont need to request that much fueling. your killing your low side that way

    i usually only up the high side for boost.
    Follow @MASTUNING visit www.mastuned.com
    Remote Tuning [email protected]
    Contact/Whatsapp +966555366161

  5. #5
    Advanced Tuner
    Join Date
    Aug 2014
    Location
    Central, LA
    Posts
    737
    Hi hp na cars run out of lt1 low side. I recommend the DSX aux kit with the CAN controller or the lt4 in tank pump.

  6. #6
    Tuner
    Join Date
    Aug 2020
    Location
    Petersham, MA
    Posts
    134
    LT4 in-tank should be fine for heads/cam car, and you can add a JMS voltage booster for even more output too.
    2017 Camaro SS, Whipple 3.0, Mast LT Black Label heads, 112mm TB, LPE BB HPFP & LT4+52% injectors, Fore Innovations triple pumps
    1059 WHP, 944 WTQ