Walbro 255lph

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  • manuel325i
    Member
    • Jun 2004
    • 80
    #1

    Walbro 255lph

    So I installed a new walbro gss341 255lph fuel pump. It works but I noticed it draws more current than the stock fuel pump fuse is rated at. I have an obd1 s52 swapped e30. So stock fuse is 7.5 amps but the walbro draws about 7.6 amps at idle. According to walbro it will draw 8-10 depending on fuel pressure. Would I need to increase my fuel pump fuse size? If so, how much can the stock wiring handle? I do not want to fry anything.
    Tags: None
    • m3boost
      Advanced Member
      • Oct 2005
      • 110
      #2
      Originally posted by manuel325i
      So I installed a new walbro gss341 255lph fuel pump. It works but I noticed it draws more current than the stock fuel pump fuse is rated at. I have an obd1 s52 swapped e30. So stock fuse is 7.5 amps but the walbro draws about 7.6 amps at idle. According to walbro it will draw 8-10 depending on fuel pressure. Would I need to increase my fuel pump fuse size? If so, how much can the stock wiring handle? I do not want to fry anything.
      Use the stock wires to activate a relay. I placed my relay by the trunk battery and ran new wires from the relay to the fuel pump..
      88 e30/s50 gt35r turbo m3



      96 gt4094r turbo m3
      452 rwhp, 455 rwtq at 14 psi 91 octane
      681 rwhp, 684 rwtq at 25 psi E65

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        • ak-
          R3V OG
          • May 2009
          • 12422
          #3
          my TRE 255lph kept blowing the 7.5 fuse.
          The wiring can handle a 10. Been using a 10 amp for 4 years no issue.

          1991 325iS turbo

            Comment

            • manuel325i
              Member
              • Jun 2004
              • 80
              #4
              I was thinking of putting a 10amp fuse. I'll try that. Thanks.

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