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  1. #1
    spouk3's Avatar
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    RXT 2012 top speed

    Hi guys,

    Running 76mph at 8570rpm... Tune is the VT11 8900 rpm... Trying to go closer to the limiter... What's next... How to increase either speed or rpm? Tuning isn't perfect, getting to it...

    Lucky13 cone? Impeller?

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  2. #2
    dlf2001's Avatar
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    Take some pitch out of the impeller. Turn more rpm equals more boost should equal more speed.

  3. #3
    JT jpt7779's Avatar
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    What SC are you using?

  4. #4
    Branden's Avatar
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    im assuming you are using the stock blower, you have all the right parts in place minus a fuel pump to do a 137+4 wheel and it would give you the added speed and rpm you are looking for.

  5. #5
    spouk3's Avatar
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    Yeah, stock blower... So, next should be a fuel pump + 137+4 wheel...

  6. #6
    Branden's Avatar
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    my opinion the 137+4 is the best bang for the buck mod it really wakes the ski up, but yes if it were my ski i would add the 255 or 340 pump and the 137 wheel and the ski will likely run 80+ all day long. i did a lot of things to my ski along the way and nothing woke up the midrange like going from the x charger to that wheel, just remember it will need more fuel and a little tuning to make it safe.

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