Impreza GR Series (2008+)

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Impreza GR Series (2008+)

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3 posters

    Fuel pump upgrade

    P4UL
    P4UL
    P4UL


    Posts : 69
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    Join date : 2010-06-04
    Age : 40
    Location : East Lothian
    • Post n°1

    Fuel pump upgrade Empty Fuel pump upgrade

    Post  P4UL Tue May 10, 2011 4:11 am

    At what point should I consider upgrading the in tank fuel pump?
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    Rob
    Rob
    Rob


    Posts : 537
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    Join date : 2010-01-28
    Age : 39
    Location : Cumbria
    • Post n°2

    Fuel pump upgrade Empty Re: Fuel pump upgrade

    Post  Rob Tue May 10, 2011 10:44 am

    P4UL wrote:At what point should I consider upgrading the in tank fuel pump?

    I did mine just after the first re-map, after talking to Andy F about it potentially leaning out the fuel mix as it gets older
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    vulnax
    vulnax
    vulnax


    Posts : 568
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    Join date : 2010-03-01
    Age : 52
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    • Post n°3

    Fuel pump upgrade Empty Re: Fuel pump upgrade

    Post  vulnax Tue May 10, 2011 11:32 am


    What would you go for?

    Walbro 255 lph, one of the new 300 lph ( albeit they don't yet do an Impreza model specific version and they are too long for the pump cradle )?
    Current wisdom seems to be engine bay mounted swirl pot and Bosch 044 pump. For 500 bhp motors and track day queens.

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    Rob
    Rob
    Rob


    Posts : 537
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    Age : 39
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    • Post n°4

    Fuel pump upgrade Empty Re: Fuel pump upgrade

    Post  Rob Tue May 10, 2011 12:04 pm

    vulnax wrote:
    What would you go for?

    Walbro 255 lph, one of the new 300 lph ( albeit they don't yet do an Impreza model specific version and they are too long for the pump cradle )?
    Current wisdom seems to be engine bay mounted swirl pot and Bosch 044 pump. For 500 bhp motors and track day queens.


    I'm running a GS342 which is the 255 lph version, it will do as a lift pump for my next stage.

    Its currently sitting at 4.5 bar on that pump with denso 750cc injectors
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    Fuel pump upgrade Empty Re: Fuel pump upgrade

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