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  1. #1

    Seadoo GTX 4 Tec 2002

    Hi
    I am new to this forum, wonder if anyone can suggest an impellor upgrade for a GTX 4 Tec(non supercharged), I have changed the intake grate to a RIVA one, and am told the next easiest and reasonably price mod is the impellor, what pitch and make should I go for to get best performance?Any other easy modifications ideas welcome.All the big mods I see are for the supercharged machines
    Thanks


  2. #2
    jpeconsult's Avatar
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    Quote Originally Posted by landew View Post
    Hi
    I am new to this forum, wonder if anyone can suggest an impellor upgrade for a GTX 4 Tec(non supercharged), I have changed the intake grate to a RIVA one, and am told the next easiest and reasonably price mod is the impellor, what pitch and make should I go for to get best performance?Any other easy modifications ideas welcome.All the big mods I see are for the supercharged machines
    Thanks
    If that is a 155 horsepower ski, they suggest the 11/19 as mentioned in the performance package.

    http://www.4-tecperformance.com/inde...roducts_id=774

  3. #3
    Thank you ..jpeconsult.

  4. #4
    King_Of_Fun's Avatar
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    You might pick up 2 or 3 mph with an air intake, grate and impeller, but that's about it. The biggest limiting factor is the inefficient jet pump. They are only around 50% efficient. If you would switch from the pump to a cleaver prop like RUNWME did, my guess is you would pickup 10 - 15 mph with no engine mods. Just don't fall off. Checkout the thread about his ski:

    http://greenhulk.net/forums/showthread.php?t=47449

    ... Ron

  5. #5
    Thanks but thats way too radical.. will just try the smaller mods.

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