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  1. #1

    Join Date
    Jul 2008

    Help with Correct Prop Pitch and Fuel Injectors for My 2004 RXP

    Need some advice for the correct prop pitch and fuel injectors for my 2004 RXP. Below is a list of my current mods:

    Rotax Racing Supercharger Wheel
    Fizzle Intercooler (1st gen)
    Supertech Valves
    Riva Power Filter Kit
    Riva Pro Waterbox and Thru Hull Exhaust
    Solas 14/19 Prop
    Top Loader Intake Grate
    OPAS Blocked Off
    CanDoo GPS Speedo

    I currently have the stock fuel injectors. I am wondering if the 15/20 prop would be the best since it is basically a stage 2 ski and that's what Riva recommends for a stage 2. I appreciate any help. Thanks.

  2. #2
    Kmorningstar_rxp's Avatar
    Join Date
    Feb 2015
    Port orange, Fla
    Petty sure you need 42lbs injectors

  3. #3

    Join Date
    Jul 2008
    Anyone have some 42# fuel injectors they are looking to sell?

  4. #4

    Join Date
    Jul 2008
    Would Bosch 48# injectors be too rich?

  5. #5
    Site Admin Green Hulk's Avatar
    Join Date
    Apr 2005
    Morgan City, LA
    Quote Originally Posted by jjspyder View Post
    Would Bosch 48# injectors be too rich?

    Way too rich!

    You will need these injectors

    and the 15/20R is the best choice in impeller

    always install a fresh wear ring with a new impeller
    Here is the OEM replacement

    here is the best replacement

    Don't forget to use the discount code: greenhulk in the forums store

    Hope that helps!


  6. #6
    Got Boost? psycho rxp's Avatar
    Join Date
    Jul 2005
    Port St. Lucie, FL
    how much boost does that wheel put out?
    An X charger would be a better setup than that wheel, I'm guessing

  7. #7

    Join Date
    Jul 2008
    I'm not sure how much boost I'm getting. I haven't installed a boost gauge yet. I'll probably wait til the supercharger needs rebuilt and consider getting an X charger. I put the Rotax Racing wheel in last time I rebuilt the supercharger and it felt like a significant increase over the stock wheel even with no other mods at the time.

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