fuel change for 10% over?

Discussion in 'PSI Superchargers Tech Questions' started by vwsamba, Aug 11, 2008.

  1. vwsamba

    vwsamba Member

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    what kind of fuel system change would you guys recommend when adding 10% over on the blower.not looking for record et's just to run better and be able to take my engine home in one piece...thanks :)
     
    #1
    vwsamba, Aug 11, 2008
  2. blwnaway

    blwnaway Member

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    I wouldnt make any change unless your on the edge now. I mean why would you up the blower and then handicap it back with fuel?
     
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    blwnaway, Aug 12, 2008
  3. Mike Canter

    Mike Canter Top Dragster
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    According to my notes a 10% increase in OD can be somewhere between a max of 3 and 4 lbs of boost change in a good blower and maybe 2 to 3 lbs of a not so good blower. For safety I would assume the possible max and compute the fuel needed by .28 GPM for each lb of boost increase expected. So 1.12 GPM (assuming the highest at 4 lbs of boost increase) is a good safety margin until you read the actual amount of boost change then you can bring the GPM down to match the actual blower boost gain.
     
    #3
    Mike Canter, Aug 12, 2008

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