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When is an FPR needed?

Discussion in 'General Tech and Maintenance' started by bdogggut34, Nov 28, 2004.

  1. bdogggut34

    bdogggut34 Senior Member

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    Once my 95 B18b1 swap gets finished up i'll have I/H/E. I read in a magazine that these mods cause the motor to run lean. My question is, at the point i'm at do i NEED a fuel pressure regulator? Does the motor run lean enough to hurt the motor? Now that this has come to my attention i've also been looking at them. Anyone suggest a good but decently priced FPR? (B&M, or AEM)
     
  2. Citizen_Insane

    Citizen_Insane Senior Member

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    You don't need an FPR with IHE. Don't worry about it.
     
  3. bdogggut34

    bdogggut34 Senior Member

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    quick and easy, thanks for the help
     
  4. pissedoffsol

    pissedoffsol RETIRED

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    wildbill ran the stock ecu, stock fpr, with jdm p30 pistons, crower 403 cams, and it was still on the rich side.

    FPR's run off vacuum. when you throw in more air, it comp's more fuel.

    IMO, there is 0 reason to ever change your fpr unles you are at the point where your injctors are very large and require more presure to function properly.
     
  5. civicious

    civicious FüK-VTEC VIP

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    What if you have huge injectors, say 450cc's, and a bigger fuel pump?
     
  6. Prowler

    Prowler Super Moderator

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    running nitrous would most likely need a fpr.
     
  7. pissedoffsol

    pissedoffsol RETIRED

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    450s are a far cry from huge. medium/small at best.
    there is no need to run anything but the stock 42 psi honda provides us.

    a fpr with nitrous, is also not needed. using a proper nitrous mangemnt unit, it will control fuel as best it can (Which they all suck at, unless you are running an ems of some sort)
     
  8. sohcslammer

    sohcslammer Senior Member

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    AEM EMS owns nitrous. :ph34r:
     
  9. pissedoffsol

    pissedoffsol RETIRED

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    hondata also has nitrous control. not sure about uberdata
     
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