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  1. #1

    Exclamation 07 rxp with x charger only 67.5 mph?!?!?1 how is this possible?

    i have a 07 rxp with x charger and 42 lb injectors....other than that my ski is completely stock no intake grate, no air intake, no free mods, no nothing.... it launches crazy now with the x charger the torque and power is there! but i only get 8050-8100 rpm when i should be at rev limit. also only 67.5 is my best mph so far thats a stock rxp! ... i dont understand what can be wrong. the impeller is still the factory 07 impeller , nothing at all is altered... my only guess from reading on here is that the timing is completely advanced thats why i have insane wholeshot but no top end...


  2. #2
    formerly Gold06RXP Turbo Nick's Avatar
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    What did it run like befor the x-charger

  3. #3
    7800 rpm at 64.3 max mph on gps

  4. #4
    oct6454's Avatar
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    What impeller do you have? Those RPM's before the X seem kinda low. Mine will run 8000 with a 14/19r with only an intake. Also, what kind of weather are u ridding in? The temp can have a HUGE effect on performance.

  5. #5

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    boost leak

  6. #6
    stock 07 impeller and 96 degrees in miami today... im thinkin i need an intake

  7. #7

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    With the stock prop and those rpm's, the speed is about right. My guess is you are rich with that setup and the heat and humidity. An intake will help lean it out a little and a pump grate will help the speed.

  8. #8
    formerly Gold06RXP Turbo Nick's Avatar
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    Its just really hot

  9. #9
    Melbourne (AUS) gtile04's Avatar
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    im running 8100rpm on stock charger

  10. #10
    Your rpms seem low before the x charger. But u don't need to run 42"s with the x charger as
    Long as your running stock air intake and stock intercooler, put the 38"s back in.

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