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  1. #1
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    HPFP pressure issues (low). Help! RB 135.

    Fighting this car up and down the street. Different flashes, parts, etc always net mostly the same result. FPH plummets randomly. Running no more than 4-5gal E85 on a fill up of 93. HPFP is new, new plugs, new bank1 injectors, etc.

    N54tech thread:
    http://www.n54tech.com/forums/showthread.php?p=303088
    (sorry if not allowed to crosslink)

  2. #2
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    Linking there is fine.

    Not sure what to you other than try it without the E85 and see what happens.
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  3. #3
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    Click here to enlarge Originally Posted by 328ijunkie Click here to enlarge
    Fighting this car up and down the street. Different flashes, parts, etc always net mostly the same result. FPH plummets randomly. Running no more than 4-5gal E85 on a fill up of 93. HPFP is new, new plugs, new bank1 injectors, etc.

    N54tech thread:
    http://www.n54tech.com/forums/showthread.php?p=303088
    (sorry if not allowed to crosslink)

    hate to tell u this..
    RB with that boost too much demand for higher e85 mixes..

    add meth and u should be ok

    or swap over to 100oct instead

    Port injection is coming soon, but do one of the above to get by for now
    - Proven Power Tampa built 6466 ST -
    - N54 6AT WR 711whp 637wtq-
    -N54 WR 1/4mile trap: 133.57mph- -

  4. #4
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    Click here to enlarge Originally Posted by 328ijunkie Click here to enlarge
    Fighting this car up and down the street. Different flashes, parts, etc always net mostly the same result. FPH plummets randomly. Running no more than 4-5gal E85 on a fill up of 93. HPFP is new, new plugs, new bank1 injectors, etc.

    N54tech thread:
    http://www.n54tech.com/forums/showthread.php?p=303088
    (sorry if not allowed to crosslink)
    With that much boost on the RB's you just cant run that much E85, the HPFP just can't deliver that much fuel. For a fix I am confident our HPFP set-up will be available before anyone has a mass produced PI set up ready to go. Not only that, it also saves you the hassle and work of setting up a PI system. We should be making some announcements soon, cant do much testing when it rains 5 days in row.
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  5. #5
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    Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
    With that much boost on the RB's you just cant run that much E85, the HPFP just can't deliver that much fuel. For a fix I am confident our HPFP set-up will be available before anyone has a mass produced PI set up ready to go. Not only that, it also saves you the hassle and work of setting up a PI system. We should be making some announcements soon, cant do much testing when it rains 5 days in row.
    Your first run of the modified HPFP and rail has done wonders for me

    im def in for whatever u are working on next
    - Proven Power Tampa built 6466 ST -
    - N54 6AT WR 711whp 637wtq-
    -N54 WR 1/4mile trap: 133.57mph- -

  6. #6
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    I saw your thread , do you get a missfire on cyl 1 every single time you go WOT?

    that boost curve, or table , you run is pretty unique to your set from what i have seen... no taper at all
    09 6AT 335i Coupe M-Sport - SOLD
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