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  1. #1
    GOT BOOST? Dockside's Avatar
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    Fuel pump voltage!!! 215-255

    What controls the fuel pump voltage, is it the ECU? Im askin cause if the ecu does control the voltage I could run the x charger with no afr problems or an rrfpr.


  2. #2
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    Quote Originally Posted by sportsterme View Post
    What controls the fuel pump voltage, is it the ECU? Im askin cause if the ecu does control the voltage I could run the x charger with no afr problems or an rrfpr.
    ... is the X charger all you want to add???

    Fuel system pressure at WOT becomes the issue... not pump voltage.

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    GOT BOOST? Dockside's Avatar
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    X set-up... so x charger, 42's, external intercooler, 4in intake and x ecu but the voltage in the fuel pumps is diffrent so i need to figure out what to do about it to run this set-up. if not i think ill be doing a GEN II wheel instead .

  4. #4
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    Quote Originally Posted by sportsterme View Post
    X set-up... so x charger, 42's, external intercooler, 4in intake and x ecu but the voltage in the fuel pumps is diffrent so i need to figure out what to do about it to run this set-up. if not i think ill be doing a GEN II wheel instead .
    Is there something specific you are looking for out of the X ECU versus getting the rrfpr instead? Doesn't it have a slightly lower limiter, and maybe a different fuel curve?

    I'm thinking price wise...X ECU verse the rrfpr...what are the pros/cons of going either route?

  5. #5
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    Quote Originally Posted by sportsterme View Post
    X set-up... so x charger, 42's, external intercooler, 4in intake and x ecu but the voltage in the fuel pumps is diffrent so i need to figure out what to do about it to run this set-up. if not i think ill be doing a GEN II wheel instead .
    X fuel pump assembly as well

  6. #6
    GOT BOOST? Dockside's Avatar
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    I believe the pumps are the same. only diffrence is the voltage

  7. #7
    GOT BOOST? Dockside's Avatar
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    Quote Originally Posted by jpeconsult View Post
    Is there something specific you are looking for out of the X ECU versus getting the rrfpr instead? Doesn't it have a slightly lower limiter, and maybe a different fuel curve?

    I'm thinking price wise...X ECU verse the rrfpr...what are the pros/cons of going either route?
    The only reason i want to use the x ecu is to avoid tuning an rrfpr.

  8. #8
    jpeconsult's Avatar
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    Quote Originally Posted by sportsterme View Post
    The only reason i want to use the x ecu is to avoid tuning an rrfpr.
    Gotcha. Ever plan on going bigger than the X SC?

  9. #9
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    Quote Originally Posted by sportsterme View Post
    The only reason i want to use the x ecu is to avoid tuning an rrfpr.
    The RRFPR is not only a lot cheaper than an ecu... it will give you much more flexability to tune the ski for proper a/f throughout the year, and as you add more mods!

  10. #10
    GOT BOOST? Dockside's Avatar
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    I could get an x ecu for under 400. Im not looking to go much bigger yet and ive never used an rrfpr befor so i need to find out more about them befor i go that route.

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