What performance fuel pump?

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  • 3URO_BOY
    Advanced Member
    • Feb 2012
    • 183

    #1

    What performance fuel pump?

    Im trying to get a good performance fuel pump what should i get? I have a chip, mustang yellow top Bosch injectors, adjustable fuel pressure regulator from bev auto, headers, k&n air filter for oem air box, i know it wont do much but it will help. And also with the adjustable fpr what should i adjust it to? I know the stock fuel pressure regulator runs at 38-39 psi. Please help. Much appreciated.
  • ahrensNW
    E30 Mastermind
    • Mar 2015
    • 1716

    #2
    Pretty sure Wahlboro is the way to go for better fuel pump. This should really be posted in the m20 section in the technical forums. I vote for a move.
    Hank Ahrens
    1984 Alpine Coupe
    1978 911sc

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    • ebox86
      E30 Addict
      • Sep 2012
      • 528

      #3
      Go with the Wahlboro 255 or TRE 255, i think they're the same thing but the TRE is cheaper
      '99 e46 323i - wrecked
      '87 e30 325iS - sold
      '91 e30 325i - sold
      '89 e30 M3 - fun car
      '09 e91 328i - sold
      '97 impreza - rally car - flipped
      '08 impreza - new rally car
      '01 996 tt - more fun car
      '82 Ford f350 - work truck

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      • 4ce30
        R3VLimited
        • Feb 2006
        • 2762

        #4
        You should spend your money on something else. We don't even upgrade our pumps in our boosted m20s until over 12psi !
        sigpic

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        • djjerme
          R3V Elite
          • Sep 2010
          • 5082

          #5
          ^^^

          Do you have a wideband to actually know what your AF is? Throw money at one of those first, so you can see what your actual fuel needs are. From what your mods sound like, you could sell the injectors, and FPR and just have a set of stock injectors flowed, clean your fuel lines/fuel filter and be happy we saved you several hundred $$$..

          If you are getting hesitations/stalling when hard cornering, chance are you are low on fuel and uncovering the pump in the tank. Then, it won't matter which pump you have, you will still have the same issue.

          It's been covered many times before, but here's a brief synopsis -

          -Build a surgetank setup using the stock setup.
          OR (depending on which fuel tank you have)
          -add a second Low pressure pump in the other side, so you then have 2 low pressure pumps in side the tank.
          1991 325i MT2 Touring (JDM bro)
          2016 Ford Flex
          2011 Audi A3 - wife's other German car

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          • nando
            Moderator
            • Nov 2003
            • 34827

            #6
            don't adjust your fuel pressure unless you want to make it run like ass.

            unless you have a turbo, you don't need an upgraded FP.

            Stock M20B25 pressure is 3 bars, 43.5psi.
            Build thread

            Bimmerlabs

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