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  1. #1

    Waterbox temperature alarms

    Hello All.
    We get a lot of request to change the Waterbox temperature limiter.

    Some racers have issues with limp mode due to hitting the limiter.

    The stock limiter is set at 230 F / 110 C

    We have now added this feature in the map editor so you can select what limiter you want.
    Only for Bosch based skis for now!

    BUT, You guys that runs Motec and other stand alone ecus that might have played with this.

    What temperatures have you seen without melting the hull. ... ?

    One tuner emailed us claiming that he run his ski w at waterbox temp of 284 F / 140 C.

    We have not tested this ourselves .

    But could be very good to know where the melting point for hoses and so on starts...


  2. #2
    boost junkie skidoochris's Avatar
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    my motec just logs the temps and set to never alarm
    some hoses are good to 350f /177c
    http://www.hps-siliconehoses.com/ind...ling-hose.html
    Last edited by skidoochris; 05-07-2013 at 06:27 PM.

  3. #3
    ok any logs of the waterbox?

  4. #4
    boost junkie skidoochris's Avatar
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    My water box does not get hot, I have extra water flow to keep it cool
    and I could see a racer not wanting much water in his box

  5. #5
    Moderator beerdart's Avatar
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    Just unplug the sensor. If you have a major overheat the sensor will melt before the couplers. Or remove and leave it plugged in so no sensor on the dash.

  6. #6
    Quote Originally Posted by VTECH.SE View Post
    Hello All.
    We get a lot of request to change the Waterbox temperature limiter.

    Some racers have issues with limp mode due to hitting the limiter.

    The stock limiter is set at 230 F / 110 C

    We have now added this feature in the map editor so you can select what limiter you want.
    Only for Bosch based skis for now!

    BUT, You guys that runs Motec and other stand alone ecus that might have played with this.

    What temperatures have you seen without melting the hull. ... ?

    One tuner emailed us claiming that he run his ski w at waterbox temp of 284 F / 140 C.

    We have not tested this ourselves .

    But could be very good to know where the melting point for hoses and so on starts...
    i have this same issue with my turbo setup i re-welded the 02 to after the turbo and welded the nut for the temp sensor and i had to remove it because it would put it in limp mode in 30-60 seconds, i removed the sensor since i don't have a water box put a screw in the plug and zip tied the connector to the engine harness.

  7. #7
    West Texas RXP skoepp's Avatar
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    BD he is asking what temp the box gets too hot?
    Don't think unplugging the sensor and running it till it melts is going to help him figure that out.
    Unless you measure temp and change the water flow and see what happens.

  8. #8
    So anyone got any info or logs?

  9. #9
    www.eastcoastpwc.net Scott's Avatar
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    I have logs from my M1 showing average temps @ 170F at high rpm

    The tune is set to 266F before limiting rpm to 4000

    Voltage:

    Low Fault - 0.100 V
    High Fault - 4.900 V

  10. #10
    Matatan tocullo's Avatar
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    Quote Originally Posted by Scott View Post
    I have logs from my M1 showing average temps @ 170F at high rpm

    The tune is set to 266F before limiting rpm to 4000

    Voltage:

    Low Fault - 0.100 V
    High Fault - 4.900 V
    Have you seen any performance gains keeping the waterbox to Low temps vs higher temps? What are te ideal waterbox temps?

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