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  1. #1
    seanpearce's Avatar
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    Rxp-x 300rs upgrades (bang for buck)

    Hi guys, i have purchased a riva through hull and waterbox for my rxp which sounds grate. Recently have just done a ECU remap to 84RPM but im still not getting 8400RPM due to (i'm guessing) the standard prop? What would be my next step for more power? Let me know your thoughts please.
    Cheers,
    Sean


  2. #2

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    Quote Originally Posted by seanpearce View Post
    Hi guys, i have purchased a riva through hull and waterbox for my rxp which sounds grate. Recently have just done a ECU remap to 84RPM but im still not getting 8400RPM due to (i'm guessing) the standard prop? What would be my next step for more power? Let me know your thoughts please.
    Cheers,
    Sean
    What speed/RPM are you at now? You probably need a repitch if your way under your target of 8400rpm. You could do an intake and IMUK and see where your at then repitch....at least that is what I would do

  3. #3
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by seanpearce View Post
    Hi guys, i have purchased a riva through hull and waterbox for my rxp which sounds grate. Recently have just done a ECU remap to 84RPM but im still not getting 8400RPM due to (i'm guessing) the standard prop? What would be my next step for more power? Let me know your thoughts please.
    Cheers,
    Sean
    Sean, you need to ditch the restrictive stock air intake and go with the Riva power filter. I also recommend doing the intake manifold upgrade which removes the restrictive stock ribbon. Doing these two things will add considerable RPM/power

    RIVA Sea-Doo RXP/RXT 300 & GTX LTD 300 Power Filter

    Our new Sea-Doo 300 Power Filter feeds your supercharged engine a steady diet of cool air delivering greatly improved acceleration and rpm. Replaces...
    RS13140 $399.95




    RIVA Sea-Doo RXP/RXT 300 Intake Manifold Upgrade Kit

    Our Sea-Doo 300 Intake Manifold Upgrade Kit enables your engine to produce more horsepower through increased boost pressure (+1 lb). Supplied hole...
    RS12140-IMUK $179.95



    It's also highly recommended that you use a catch can on these 300 skis. Here are two great choices

    GRF Racing Sea Doo Stainless Steel Catch Can

    GRF Racing stainless steel catch can. Constructed of 316 stainless steel. It mounts using your front engine hook bolts. Accepts 3/4" line from your...
    GRF Catch Can $114.95


    RIVA Sea-Doo 4-TEC Catch Can/Engine Breather Kit

    Easy to install catch can/oil breather eliminates power-robbing crankcase fumes and oil vapor from your engine's air intake. Increases horsepower by...
    RS19050-BCC-1 $139.95


  4. #4
    seanpearce's Avatar
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    78MPH is my top speed. thats with the recent remap and exhaust.

  5. #5
    seanpearce's Avatar
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    awesome thanks for that. so, if i did a power filter, intake manifold and the 3 blade riva prop would i be pushing over 80mph???
    thanks

  6. #6

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    Quote Originally Posted by seanpearce View Post
    78MPH is my top speed. thats with the recent remap and exhaust.
    78mph dash or GPS and what RPM?

  7. #7
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Quote Originally Posted by seanpearce View Post
    78MPH is my top speed. thats with the recent remap and exhaust.
    Any mods like that will make your boat not legal for our Stock Novice class. If you want to keep racing you need to be very careful about what mods you do.

  8. #8
    quiddo15's Avatar
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    Ijsba stock class rules allow you to modifying the following:

    -Airintake
    -Impeller
    -ECU
    -Sponsons
    -Intake grate
    -Steering

    You can not modify your exhaust, injectors, manifold, supercharger and Intercooler.

    A good stock class setup
    Vtechtune
    4inch air
    solas 13-18 down to 13-16 or 13-15 depending on climate
    R&d or riva intake grate

  9. #9
    boost junkie skidoochris's Avatar
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    so how would they know you modified the stock injectors

  10. #10
    quiddo15's Avatar
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    It would take two seconds for a tech to see you are running aftermarket injectors.
    You can swing the 300 to 8700 safely on stock Injectors.
    I have been swinging 8600+ on stock valve train and stock injectors for 40+ hours

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