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  1. #1
    Ale's Avatar
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    VIDEO test R3 + ET15.5 afr-rpm-boost speed value

    yesterday I went out with gopro and filmed this test video.
    It's the only way to log my parameters

    looking at the video I see...

    tto tach: not real good working at low rpm but seems work good from 4000 / 5000 rpm to wot
    heat fade: type 14 IC... first wot pass are at 8560 rpm next passes slow down to 8400 (if tto tach works good)
    PSI... with et15.5 I can see 17 max psi at 8550. sounds good
    AFR: not easy to read... but it seems quiet good at wot. maybe I will increase a little bit fuel pressure for safety
    I run R3 8850 rpm, ET15.5 160mm 15/23 impeller. 86mm nozzle 3°. stock injectors.


    here's the video


  2. #2
    SOV's Avatar
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    Hi Ale what is your fuel pressure? I had to set 75 psi to get 11.8 at wot.
    Sergiu

  3. #3

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    should probably increase injector size

  4. #4
    Not bad

  5. #5
    64physhy's Avatar
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    Quote Originally Posted by SOV View Post
    Hi Ale what is your fuel pressure? I had to set 75 psi to get 11.8 at wot.
    Sergiu
    I only had to set mine to 52 psi at idle with rising rate. Right now. I'm at 12.1 WOT, but it will drop with the heat this summer.

  6. #6
    SOV's Avatar
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    Hmm, at 12.5 you will blow your engine...just be careful.
    Sergiu

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  8. #7
    Slamdcoop0428's Avatar
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    Quote Originally Posted by SOV View Post
    Hmm, at 12.5 you will blow your engine...just be careful.
    Sergiu
    Not necessarily, depends all on the timing he is at. People need to chill out on a/f numbers.

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  10. #8
    64physhy's Avatar
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    Quote Originally Posted by SOV View Post
    Hmm, at 12.5 you will blow your engine...just be careful.
    Sergiu
    12.5 is as lean as you would want to go and still be safe. Many offshore racers run at 12.5.

  11. #9
    SOV's Avatar
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    I run now 12.5 at wot and I am afraid...my fpr is set to 80psi!

  12. #10
    Ale's Avatar
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    Quote Originally Posted by SOV View Post
    Hi Ale what is your fuel pressure? I had to set 75 psi to get 11.8 at wot.
    Sergiu
    Hi Sergiu. my RRFPR is setted lowest of your for sure.
    Now don't remember exactly but maybe 55 psi.

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