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  1. #1

    Stock rev limiter on RXT X 300?

    Anybody know what RPM it is?


  2. #2
    Site Admin Green Hulk's Avatar
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    8040 RPM

  3. #3
    ^ I thought I read that somewhere. Thank you brother. 8400 RPM the max limit for stock valve gear?

  4. #4
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by guybb3 View Post
    ^ I thought I read that somewhere. Thank you brother. 8400 RPM the max limit for stock valve gear?
    8500 rpm when using a MaptunerX reflash

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    Team Bilford's Avatar
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    Quote Originally Posted by Green Hulk View Post
    8040 RPM
    Glad that this thread is current. I have an 18 RXP 300 and today with cooler air, my stock engine with a SCOM was turning 8060/70 for as long as I wanted. I don't understand why the ECM never slowed it down if 8040 is the limit. Please explain what I am experiencing because the SCOM does not change the limiter.

  6. #6
    Margin of error? Just like our machines are SUPPOSED to be limited to 69-70 but I have seen 74. It immediately pulled back to 70 but it did hit 74.

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    Team Bilford's Avatar
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    Quote Originally Posted by guybb3 View Post
    Margin of error? Just like our machines are SUPPOSED to be limited to 69-70 but I have seen 74. It immediately pulled back to 70 but it did hit 74.
    Apples and oranges. The speed limiter is GPS based and will lag until your speed is determined. The RPM limiter should be immediate and is based on the chip programming in the ECU. I am really curious as to what I am experiencing. Is the tach off a bit? I would think that it would get its info from the ECM.

  8. #8
    moparguy's Avatar
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    Quote Originally Posted by Team Bilford View Post
    Apples and oranges. The speed limiter is GPS based and will lag until your speed is determined. The RPM limiter should be immediate and is based on the chip programming in the ECU. I am really curious as to what I am experiencing. Is the tach off a bit? I would think that it would get its info from the ECM.
    If you're chasing 20rpm with a SCOM, time to put on your big boy pants and crank er up

  9. #9
    !!!! wave jumper !!!! 05_RXP's Avatar
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    Quote Originally Posted by Team Bilford View Post
    Glad that this thread is current. I have an 18 RXP 300 and today with cooler air, my stock engine with a SCOM was turning 8060/70 for as long as I wanted. I don't understand why the ECM never slowed it down if 8040 is the limit. Please explain what I am experiencing because the SCOM does not change the limiter.
    there is some margin of error. Just because the rev limiter is set to 8040 does not mean it will stop exactly at that rpm. Let me ask you a question my ski had a rev limiter of 8040 and would show a max of 8980?

  10. #10
    Team Bilford's Avatar
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    Quote Originally Posted by moparguy View Post
    If you're chasing 20rpm with a SCOM, time to put on your big boy pants and crank er up
    LOL, just trying to understand how the limiter works, because the ski certainly did not act like it was "on the chip". If anything, it acted like there was no chip.

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