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Thread: gprxp upgrade

  1. #1
    deansta's Avatar
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    Talking gprxp upgrade

    just want to know what is need going from a stock set up to a Rude Charger ,Rotax Racing Stock Class ECU ,
    Rotax Racing Inter Cooler?thanks


  2. #2
    BLACK MAGIC HEADERS hydrojunkie's Avatar
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    rising rate regulater, prob 42's or 50 lb injecters.

  3. #3
    Autosport's Avatar
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    Quote Originally Posted by deansta View Post
    just want to know what is need going from a stock set up to a Rude Charger ,Rotax Racing Stock Class ECU ,
    Rotax Racing Inter Cooler?thanks
    Big cahoonas to squeeze the throtle
    big Bicepts to hold on

  4. #4
    Mik72e's Avatar
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    Is a valve train needed for stock class ECU at 8350.

  5. #5
    deansta's Avatar
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    spoke to jason last night on the phone about what has to be done...now i just gotta make up my bloody mind...

  6. #6
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    Once you toss an ECU and external IC into the mix, you need valvetrain and proper fuel supply to get your ratio right...Invest in a A/F reader to make life a little easier, as each build is different...

    On a side note, if you can swap the Rotax IC for something else, you'll get better airflow...The Rotax is a good unit, but restrictive compared to others...

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