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  1. #1
    2007 SeaDoo Rxt Sosa62's Avatar
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    Whats going on with my Top Speed?? RPM ???

    Hows it going everyone? well I went riding today and had a good time BUT!!!
    I ran a couple of full Wot passes to record a Top Speed and I got 63.1 MPH @ 7600rpms...
    THIS IS THE SAME AS MY STOCK SPEED???
    lol what am I doing wrong here?????
    Ive got my mods listed below, I cant seem to pick up my RPMS my buddy says theres no way I will get much more Rpms on my stock ECU I tell him he must work for riva... lol What do i have to do to get my Rpms up close to 8000??? Should I repitch my prop? or is he right? im not gonna see those numbers unless I change the Ecu???
    Any help would be appreciated.

    I raced an ultra today and he took me outta the Hole shot and pulled 3 lengths but I would catch him towards the end of every run....
    I thought id see atleast a 1mph increase with the money put in so far but so far nothing but a headache and although it sounds mean it doesnt back up its bark...
    HELP PLEASE...


  2. #2
    buddydoo's Avatar
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    How many hours do you have on your metal washers on your SC,could need a shim.

  3. #3
    gtxscrider's Avatar
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    Hey sosa you dont need to change ecu to rev higher repitch the prop and youll probably see 8000-8100rpms make sure your sc is healthy becouse that could be your problem too and dont be suprised if you dont get the mph you expect with the humidity down here it realy hurts us.
    Last edited by gtxscrider; 10-22-2007 at 07:28 AM.

  4. #4
    gtxscrider's Avatar
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    I raced an ultra today and he took me outta the Hole shot and pulled 3 lengths but I would catch him towards the end of every run....
    I thought id see atleast a 1mph increase with the money put in so far but so far nothing but a headache and although it sounds mean it doesnt back up its bark...
    HELP PLEASE...[/quote]

    Dont be scared of the kawa im known as the ultra killer round these parts. Seriously though ive beaten every single ultra in miami just watch out for there holeshot and when theres a small craft advisory thats the only time ultra are even competitors they just cant win at over 69mph speeds i guess its becouse of there hull.
    Last edited by gtxscrider; 10-22-2007 at 07:16 AM.

  5. #5
    Site Admin Green Hulk's Avatar
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    You should be turning 8100 RPM's

    Have you ever been able to turn 8100 even when stock? If not, then there is a problem.

    The most common problems of low RPM are

    Over filled oil
    Worn wear ring
    Slipping supercharger clutch
    Boost leak
    Too much pitch for your application (your pitch is fine)
    Last edited by Green Hulk; 10-22-2007 at 08:47 AM.

  6. #6
    Will work on YOUR ski for FREE! GeoRXT's Avatar
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    Quote Originally Posted by Green Hulk View Post
    You should be turning 8100 RPM's

    Have you ever been able to turn 8100 even when stock? If not, then there is a problem.

    The most common problems of low RPM are

    Over filled oil
    Worn wear ring
    Slipping supercharger clutch
    Boost leak
    Too much pitch for your application (your pitch is fine)
    Well put...You may want to talk to Frazier down here to get your bugs worked out. Have you ever chaged the wear ring? You should start by doing that first...Then re-pitch your prop....But if you've never seen 8000-8100 like hulk said there could be something else maybe....Start with the easy check list first.

  7. #7
    2007 SeaDoo Rxt Sosa62's Avatar
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    Thanks for the info..
    I have never been able to pull anything over 7650 rpms even when completely stock... A friend of mine rode i not to long ago and said He thought I might have a boost leak, How do I check for this??
    The Wear ring is in grea condition so far I changed it right after memorial day weekend. Im getting ready to do it again once I have to repitch the prop but im going to go with a SS wear ring.
    As far as i know my supercharger should be fine It was totally replaced 6 hours ago, Think its still breaking in???
    My oil levels are all were the should be on the dip stick..

    How much tweaking should I get done on my prop?

    The Rxp-x is looking real good right now... lol

    63.1 isnt gonna cut it I need more.. lol

  8. #8
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by Sosa62 View Post
    Thanks for the info..
    I have never been able to pull anything over 7650 rpms even when completely stock...


    Where did this ski come from? Did you buy it new?

    7650 is the limit on the GTX ECU. If you bought it used i'm wondering if a GTX ECU got installed on this ski for some odd reason.

  9. #9
    2007 SeaDoo Rxt Sosa62's Avatar
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    I bought it new.. at powersports of delray..

    I purchased it at powersports of delray with 0 hrs on it..
    It was prebuilt when I got there so I wouldn't know if they put the wrong ecu in it maybe they ripped me how can I fine out?

  10. #10
    Will work on YOUR ski for FREE! GeoRXT's Avatar
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    I say you take it back and let them deal with it. Specially since you bought it new...But who knows, maybe they'll say the mods messed it up so....Kinda hard to say....

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