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  1. #1

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    2020 rxtx300 337 hp

    my friend had his 2020 rxt300 with the stage 3plus kit from riva and had it dyno ,i have the the same set up.does 337 hp seem low or high

  2. #2
    SplishSplash's Avatar
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    Lot depends on how it was dyno'd. Explain how they ran it on a dyno.

  3. #3

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    im not sure he builds race engines for cars and dynos them


  4. #4

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    if they come from the factory with 300 and his reading is right that means the kit only adds about 10 percent more power

  5. #5

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    Quote Originally Posted by lightspeed View Post
    if they come from the factory with 300 and his reading is right that means the kit only adds about 10 percent more power
    I think 12% is a decent amount for a stage 2. I'm not sure if that is good for stage 3 either?

  6. #6
    SplishSplash's Avatar
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    For the numbers to mean anything you need to baseline dyno that engine before the mods were done to know what you were starting off with. Sure its called a 300, but maybe it made 280 or 290 stock, then the mods would be reasonable HP gains.

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  8. #7

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    Quote Originally Posted by SplishSplash View Post
    For the numbers to mean anything you need to baseline dyno that engine before the mods were done to know what you were starting off with. Sure its called a 300, but maybe it made 280 or 290 stock, then the mods would be reasonable HP gains.
    DUH!!! Excellent point. My bad

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