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  1. #1

    What is the F12X capable of with Macsboost Stage 2?

    With just the stage 2 kit, playing around with different boost tubes and hopefully using 94 octane. What kind of GPS speeds have you seen?


  2. #2
    Quinton Robbins's Avatar
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    Quote Originally Posted by loudsubz View Post
    With just the stage 2 kit, playing around with different boost tubes and hopefully using 94 octane. What kind of GPS speeds have you seen?
    Not likely to see over 66 - 68 basically due to hull design.

  3. #3
    DRock's Avatar
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    66mph gps will probably be about it on a f12x, r12x's may get another 1mph or 2. 66mph on a f12x will probably be with a repitched prop(get the 17/29 pitched to a true 17/29, maybe 17/30), 19psi boost tube(or atleast the 17.5), and a mix of race fuel. If you get your ride plate and intake grate done you may get another mph or so out of it as well.

  4. #4
    Quote Originally Posted by DRock View Post
    66mph gps will probably be about it on a f12x, r12x's may get another 1mph or 2. 66mph on a f12x will probably be with a repitched prop(get the 17/29 pitched to a true 17/29, maybe 17/30), 19psi boost tube(or atleast the 17.5), and a mix of race fuel. If you get your ride plate and intake grate done you may get another mph or so out of it as well.
    Ok thats good to know. I am hitting 60.2mph on GPS right now with 91 octane, stock boost tube and slightly choppy water. I want to cram as much as I can to get to those speeds so I will be playing around a bit with it.

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