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Thread: Lt4 hpfp crashing at 5900-6000rpms to 100psi

  1. #1
    Potential Tuner
    Join Date
    Feb 2021
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    4

    Lt4 hpfp crashing at 5900-6000rpms to 100psi

    low side is an upgraded 400lph pump , all this started happening after I installed the upgraded low side the car also has 30% injectors and 2650 supercharger. I feel like there's some sort of limitation in the tune that doesn't have anything to do with the hpfp itself during the pulls I'm only around 5.0 IPW need help asap.
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    Last edited by JAMILRRR; 02-22-2024 at 11:13 AM.

  2. #2
    Potential Tuner
    Join Date
    Feb 2021
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    4
    Attachment 143135 also this one

  3. #3
    Potential Tuner
    Join Date
    Feb 2021
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    4
    Hpfp is only at 15 duty cycle .....