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  1. #1
    fabrication guru rapidacceleration's Avatar
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    YAMA-DOO SUV 1500sc speed update

    Ok did more testing this weekend
    since the first test we have....

    Resealed the shoe and transom plate
    cut the scoop grate and sharpened it.
    bored the nozzle 1mm
    fixed a little leak
    smoothed out the bottoms previous repairs
    58psi fuel pres reg

    NO ENGINE, CHARGER OR PUMP CHANGES

    LAST TESTING WAS 60.7 AT 7350 RPM
    NEW TESTING WAS 61.9 AT 7500 RPM

    Talked to jerry today about a SC upgrade and ECU

    Ill post a few vids later also, shot some at WOT.



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  2. #2
    fabrication guru rapidacceleration's Avatar
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    OK heres the vids
    Attached Files Attached Files

  3. #3
    David 1 FAST VE's Avatar
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    Which ECU are you running a GTX or RXP?

  4. #4
    fabrication guru rapidacceleration's Avatar
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    its still the stock gtx ECU with a 7650 limiter. so theres plenty of room to grow. Ive got a rxp ecu (thanks jerry) that im going to get programed saturday along with having the SD depth sensor we installed "turned on".

    and im going to swap my vortex charger outa my RXPL and put it in the SUV.
    then upgrade the other charger with the rotax wheel for the RXPL.
    two boats upgraded with only buying one wheel... sweat.........

  5. #5
    Moderator The Bandit's Avatar
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    That barge is haulin! Should be a nice Ultra 250 KILLER when your done..

  6. #6
    fabrication guru rapidacceleration's Avatar
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    funny you made a comment about racing ultra250's...

    I ran two sunday on my test ride for about 5 miles.
    it was neck to neck in the small chop
    hit some smooth water and they started pulling away a bit then comes a GIANT house boat and the big rollers that followed behind it.
    Well once the rollers came I still WOT right threw (not over) them and passed both of the ultra in the big waves. you shouldda seen the look on there faces..

  7. #7
    Happily Self-Employed WFO's Avatar
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    Damn Daniel, that thing is huge !!!

    Sounds like that motor is working hard. Keep up the good work. You are getting faster every time out.

  8. #8
    Moderator The Bandit's Avatar
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    Quote Originally Posted by rapidacceleration View Post
    funny you made a comment about racing ultra250's...

    I ran two sunday on my test ride for about 5 miles.
    it was neck to neck in the small chop
    hit some smooth water and they started pulling away a bit then comes a GIANT house boat and the big rollers that followed behind it.
    Well once the rollers came I still WOT right threw (not over) them and passed both of the ultra in the big waves. you shouldda seen the look on there faces..

  9. #9
    fabrication guru rapidacceleration's Avatar
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    we got the RXP ecu put in (8100 limiter).
    off to the dealer to get it programed tomorrow and the depth transducer turned on.

    just bought A RR 10lbs. wheel and 42's
    that should be installed by next weekend

    And we are going with a "jims plate" next week also

    things should start getting interesting on the TUGBOAT

  10. #10
    fabrication guru rapidacceleration's Avatar
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    well got everything programed and turned on. had them turn on every power output in the buds. thats where you can get all the different switched power souces. (had VTS,output1,output2,bilge pump) lit up
    and the seadoo depth sensor (output1) came to life. it works perfect.
    knee deep water right on the stock gauge cluster 2.1 feet never lost a readding even at WOT.

    still havn't seen a gain from the higher rev limiter due to the "overproped" 15-21 we installed. stuck at 7450 still, but hoping the RR wheel and 42's should solve that problem by next week.

    did get to meet whiplash on his XP, nice guy. wish I wouldda had my RXPL out instead could have given him a much better race
    he pulled away abit from the SUV as well as his buddy on a stxr.
    It was cool to roll with some other members even if it was a "short ride"

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