How much fuel?

Discussion in 'PSI Superchargers Tech Questions' started by racerb, Nov 2, 2009.

  1. racerb

    racerb New Member

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    I am going from a 20 to 35 over on a K9, BAE 526 w/stage 4 heads. How many more gallons of fuel do i need to get close.
     
    #1
    racerb, Nov 2, 2009
  2. GregM784

    GregM784 Member

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    Probably close to a 1.2 more or so (i think!)
     
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    GregM784, Nov 2, 2009
  3. racerb

    racerb New Member

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    How much more boost should i expect to see?
     
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    racerb, Nov 2, 2009
  4. GregM784

    GregM784 Member

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    i think........(you like that?) 5-6 psi.
     
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    GregM784, Nov 2, 2009
  5. GregM784

    GregM784 Member

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    The general rule is .3/pound of boost increase
     
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    GregM784, Nov 2, 2009
  6. racerb

    racerb New Member

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    wow, thats quit a bit. Tks Greg
     
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    racerb, Nov 2, 2009
  7. Micetich

    Micetich Member

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    more fuel

    If you have a good tune up now then add the percent of change in air.
    From 1.20 to 1.35 is a 12.5% change. Take your fuel gpm now and multiply times 1.125 to get your required fuel. If unsure add extra to be safe.Also should make half track pass and read plugs. Remember your cylinder balance may change on some so be prepared to adjust.
     
    #7
    Micetich, Nov 3, 2009
  8. Mike Canter

    Mike Canter Top Dragster
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    When one is talking about increasing fuel for an increase in boost it maybe better to understand that a .3 GPM increase of fuel for every one pound increase in boost is at a refereence of 8000 RPM at a zero ft DA and it should be adjusted. Maybe that is why racerb thought it a was a little high. I find it to be pretty close.
     
    #8
    Mike Canter, Nov 3, 2009
  9. GregM784

    GregM784 Member

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    Thanks MIke, i forgot that aspect. :)
     
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    GregM784, Nov 3, 2009

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