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  1. #1

    today in the lake

    guy my stage 3 rxp with a et 140-68 only got 72.3 and 8300 rpm the charger is brand new , i only went for a short run beacuse i didnt have an rrfpr and a new fuel pump is this normal


  2. #2
    Prohibido usuario
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    Boost leak?

  3. #3
    i dont think so do you think beacuse of the fueling

  4. #4
    iron head's Avatar
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    I would say lean

  5. #5
    R88ory RXP's Avatar
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    Quote Originally Posted by iron head View Post
    I would say lean
    +1 it was prob really lean which will hurt power big time. The stage 3 ecu was mapped for the riva pro series charger so around 12psi boost @8500 not the 15-16psi that the ET will push. Although the riva ecu is boost sensitive untill 13.5 psi I believe. Get a RRFPR and a AF gauge on there to dial it in. The speed will come. R88

  6. #6
    Duke's Avatar
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    You need RRFPR, wideband, etc.. Also its a good idea to put some time on those coated washers and then check slip. RXP6 is really good at preloading the clutch so when they are properly broke in it should be right on the money.

    What kinda prop spins 8300 and goes 72mph?? Just curious.

  7. #7
    Quote Originally Posted by Duke View Post
    You need RRFPR, wideband, etc.. Also its a good idea to put some time on those coated washers and then check slip. RXP6 is really good at preloading the clutch so when they are properly broke in it should be right on the money.

    What kinda prop spins 8300 and goes 72mph?? Just curious.
    what prop comes with the stage 3

  8. #8
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    Quote Originally Posted by zenn View Post
    what prop comes with the stage 3
    15/19 3 blade, not a good topspeed prop!!

  9. #9
    R88ory RXP's Avatar
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    Quote Originally Posted by Alex13 View Post
    15/19 3 blade, not a good topspeed prop!!
    Nope but it gets there fast lol. R88

  10. #10
    whats a good top speed prop and does the riva ecu have a boost limiter

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