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  1. #1

    Join Date
    Jul 2006
    Location
    Beaufort, SC
    Posts
    592

    What injector size

    Hey guys
    2004 rxp

    XS intercooler
    Rude 1 Charger (might upgrade to a 2)
    15/20r
    riva ecu
    Riva 50# injectors
    4" intake
    gutted/shortened waterbox
    Thru Hull exhaust
    Riva grate
    Walburo fuel pump
    Rude Rising rate regulator (disconnected vac line)

    i was running aroun 77mph but wasnt really tuned out.
    I am thinking about getting the rude controller and some injectors, if i need them. will the 50s be ok for rude 2 as well if i choose to upgrade later.
    thanks
    lee


  2. #2

    Join Date
    Jul 2006
    Location
    Beaufort, SC
    Posts
    592

  3. #3
    Moderator Snoman's Avatar
    Join Date
    Apr 2006
    Location
    South Chicagoland
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    14,688
    +1
    846
    Yes the 50s should be fine with your current setup and with the 2 rude you will need a fuel controller of some sort..I am running a 2 rude ,stock ECU,Rude Fuel controller and 50s with no problem..

  4. #4
    masta2000's Avatar
    Join Date
    Aug 2009
    Location
    montreal-quebec
    Posts
    576
    +1
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    i'd say yes, especially with your rrfpr, but on stock ecu and stock fuel reg the #50 are pretty much maxed out on a rude1

  5. #5

    Join Date
    Jul 2006
    Location
    Beaufort, SC
    Posts
    592
    yea i was thinking go with 60 or 70 and take fuel out, rather then overwork or encroach on duty cycle. Although i know big injectors have worse spray patterns but i dont think that those are that big

  6. #6

    Join Date
    Oct 2009
    Location
    miami
    Posts
    715
    ihave a et extrem 68/140 i also have the powershot fuel tuner and 50 injectors and on my ski i had to turn off the tuner cause i still had to much gas now that i turned it off its perfect you only need a rrfpr when going over stock ecu

  7. #7

    Join Date
    Feb 2008
    Location
    novwhere
    Posts
    597

    injectors

    I think no need RRFPR for 2rude if you have walbro. But best if do you install AFR gauge and check. But if you have RRFPR why did disconnect?? With 3rude I us 58 psi base pressure. So for 2rude enough up to 40-50 sure.

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