Fuel Pump Question ~

Discussion in 'Car Modification' started by Wilson13B, Sep 13, 2011.

  1. Wilson13B

    Wilson13B Senior Member
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    Just change the original L9 Turbo fuel pump from one from 2JZ,seems that the 2J fuel pump too large dy,crank boost til 1.5 bar oso too rich and will keep pop out fire at the exhaust....

    At 1st i tot to change back to stock L9 Fuel Pump and i worry that it will supply insufficient fuel,then i go to look after for a Wira 1.6 Fuel Pump and turn out the Wira Fuel Pump look exactly the same as my original L9 Turbo fuel pump....i wonder does the flow rate same?

    I test the original L9 Turbo fuel pump with a External Fuel regulator,it car hold pressure up to 4.2 Bar,will it be sufficient for the engine to run boost around 1-1.2 bar?

    Thanks for any help =)
     
  2. Zeroed

    Zeroed Senior Member
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    Find out the original fuel rail pressure that your car runs at, then use the FPR to adjust the pressure back to original using the 2JZ fuel pump... then tune up from there.

    Should work?
     
  3. Wilson13B

    Wilson13B Senior Member
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    Already tried,even i unscrew the whole vacuum bolt out of the regulator,the pressure still around 3Bar,original is around 1.8-2Bar only......on 3 Bar the engine is running horrible rich at 6000RPM where the full boost kick in ~ now only off set it by setting the boost pressure higher at 1.5Bar,but it still running rich and will sometime pop fire at back when boost aren't enough ~ =S
     

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