Fuel Pump vs. boost

Discussion in '2.3L (N/A & Turbo)' started by samickguy15, Sep 29, 2005.

  1. samickguy15 New Member

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    I know that this question has probably been asked at least a million times in one form or another, but I'll go ahead and repeat it.

    How much boost will a factory '93 mustang fuel pump take? Basically, what is the ratio of LPH/GPH/etc. per PSI of boost
    samickguy15, Sep 29, 2005
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  2. BELL Founding Member

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    not very much, if you dont change it you up your chances for the KA-BooM factor... I think the ratio is 10psi of boost to 1 psi of fuel, but i'm probably wrong it might be backward...
    BELL, Sep 29, 2005
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  3. Stinger Founding Member

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    Too many factors to say for sure. Your best bet is to keep it at 15psi or under if the engine is stock and 10-12psi or under if the engine is modded (porting, exhaust, intake, etc.) until you spend 100 bux on a good pump.
    Stinger, Sep 30, 2005
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  4. samickguy15 New Member

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    Thanks for the info guys. I believe that the ratio of fuel to pressure increase is 1:1 with a minimum of 45psi fuel. Due to a tight budget I'm goind to run with the stock pump, maybe for about a month until I can afford a 255LPH pump. I'm looking at either BBK or Granatelli. Possibly Holley too, because they're all about the same price.

    Thanks again
    samickguy15, Sep 30, 2005
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  5. Stinger Founding Member

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    Walbro 255lph High Pressure pump is what you need...90-100 bux on ebay.
    Stinger, Sep 30, 2005
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  6. 67efivert New Member

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    bbk holley upr and most other brands are made by walbro so whatever u find a good deal on just buy it :)
    67efivert, Oct 7, 2005
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