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Topic Review (Newest First)

  • 03-28-2019, 09:52 PM
    FastReligion
    The lpfp is set to battery voltage no matter what. You cannot increase the line pressure unless you install a custom fuel return system. Its a return-less system, meaning the pressure release is in the fuel canister itself. A larger pump just means it can supply more fuel at the set pressure. For instance, the only time i install a larger pump is when we are adding nitrous or aux fuel, because the fuel demand on the lp fuel system is higher. The minimum operating pressure of the hpfp is 350ish psi. At 600 rpm that is approximately where the high pressure system should be sitting. Did a video on it. Again. Did 330 whp on two jukes with three different turbo set ups on oem fuel pumps.


    Sent from my iPhone using Tapatalk
  • 03-28-2019, 05:02 PM
    Macgyver
    Quote Originally Posted by mi_avant View Post
    Aeromotive doesnÂ’t make a 255lph but they do make a 340lph.

    Aeromotives are inferior to walbro as their 340lph flows about what a walbro 255lph does lol.
    Not that the Juke needs anything as the OEM fuel system has proven itself stable up to 330whp with headroom for sure.

    I wonder what the OEM LPFP does with these tests.

    On the question of whether this is a worthwhile mod or not ?

    I guess not. How can it really do what 2J says it does. There is a HPFP that is in the way of the LPFP pump. How is an extra 10-20psi going to "Push" the HPFP and help it make more fuel rail pressure. Unless 2J is jacking up the LPFP pump pressure via voltage to support the supposed "Lean" LOW RPM condition because the cam is not spinning fast enough to get enough fuel pressure from the HPFP to the Injectors.

    All of the above is just from me doing some research.

    LPFP 40psi to 70psi. What are its limits?

    HPFP : 300psi to 1800 psi ? I could not get a firm number from the manual. I got High pressure warning numbers and low pressure warning numbers.
  • 03-28-2019, 03:53 PM
    Macgyver
    Quote Originally Posted by 14RSINLI View Post
    Thank you. This article does prove my pump is way oversized. But 2J said the car is tuned with this pump flow characteristics. So if I change pump I assume I would need to retune. I am happy with it now so case closed lol
    I really hope this solves all the issues you were having.

    Now catch up to White Nismo on the track !!!
  • 03-27-2019, 11:56 PM
    14RSINLI
    Thank you. This article does prove my pump is way oversized. But 2J said the car is tuned with this pump flow characteristics. So if I change pump I assume I would need to retune. I am happy with it now so case closed lol


    Quote Originally Posted by Storm Trooper View Post
    Here is a good read for you guys on fuel pumps.

    https://www.realstreetperformance.co...t-performance/
  • 03-27-2019, 11:48 PM
    14RSINLI
    I left the inlet as is. I believe with the holes in canister the inlet can stay hydrated all the time. The car definitely idles so much smoother and it accelerates smoother. This was definitely causing problems as the pump was sucking the canister dry!

    Quote Originally Posted by Macgyver View Post
    Inlet hole is the hole at the base of this pump in the pic. He reemed it out where it sits in the white plastic cage. Made it larger in the video.
  • 03-27-2019, 11:45 PM
    14RSINLI
    I have the aeromotive 340lph. That is what 2J uses and name brands them 2J. Thanks for the heads up on the poor quality 😞


    Quote Originally Posted by mi_avant View Post
    Quote Originally Posted by 14RSINLI View Post
    Thank you sir. This is the way 2J is pumping (no pun intended) them out now, so it seems I was the guinea pig. The actual pump that they use is aeromotove, branded 2J.... see attached pic.

    Quote Originally Posted by turbo noob View Post
    Glad she back in action hope to see it at the next meet.

    Aeromotive doesnÂ’t make a 255lph but they do make a 340lph.

    Aeromotives are inferior to walbro as their 340lph flows about what a walbro 255lph does lol.
  • 03-27-2019, 08:06 PM
    Macgyver
    Inlet hole is the hole at the base of this pump in the pic. He reemed it out where it sits in the white plastic cage. Made it larger in the video.
  • 03-27-2019, 07:21 PM
    turbo noob
    That was some good reading!
  • 03-27-2019, 03:16 PM
    Storm Trooper
    Here is a good read for you guys on fuel pumps.

    https://www.realstreetperformance.co...t-performance/
  • 03-27-2019, 04:08 AM
    mi_avant
    Quote Originally Posted by 14RSINLI View Post
    Thank you sir. This is the way 2J is pumping (no pun intended) them out now, so it seems I was the guinea pig. The actual pump that they use is aeromotove, branded 2J.... see attached pic.

    Quote Originally Posted by turbo noob View Post
    Glad she back in action hope to see it at the next meet.

    Aeromotive doesnÂ’t make a 255lph but they do make a 340lph.

    Aeromotives are inferior to walbro as their 340lph flows about what a walbro 255lph does lol.
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