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  1. #1
    SOV's Avatar
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    E1 vibration and 13.4 AFR on idle

    Hi

    I just instaled my Riva E1 wheel and I have a problem, a vibration from 3000 to 4000 rpm!
    The shaft is stock,
    AFR on idle is 13.4 is it normal? Max it was 14.1 for half a second.
    Thx
    Sergiu


  2. #2
    THE PLATE MAN JIM'S PERFORMANCE's Avatar
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    Quote Originally Posted by SOV View Post
    Hi

    I just instaled my Riva E1 wheel and I have a problem, a vibration from 3000 to 4000 rpm!
    The shaft is stock,
    AFR on idle is 13.4 is it normal? Max it was 14.1 for half a second.
    Thx
    Sergiu
    That is normal for a E1 wheel it's called surge, 13.4 at idle is normal you should be more concern what you are wide open, You want to be 12.0 wide open.

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  4. #3
    Kristian Keppel Waterholics's Avatar
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    Everything there is pretty normal. What do you mean by the shaft is stuck?

  5. #4
    SOV's Avatar
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    Thx for your answer guys, the vibration is strong from 3000 to 4000rpm if I go WOT is ok, no problems at all.
    The supercharger shaft is OEM.

  6. #5
    Normal.Billet shaft would not be a bad idea with that wheel

  7. #6
    SOV's Avatar
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    Ok,so how can I reduce the surge, changing the spring from thr bov?

  8. #7
    Yes put a softer spring

  9. #8
    Kristian Keppel Waterholics's Avatar
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    I use this same wheel with a Tial BOV and a-3PSI spring and have no surge compared to when I used to run the HKS and the whole ski would vibrate anytime I was at 3-4000 RPM.

  10. #9
    Leendert's Avatar
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    Tial bov!
    best investment up to date

  11. #10
    64physhy's Avatar
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    Does anyone else use a Greddy type-RZ BOV? I started having issues when I went to an E1, and wondering where I should have it adjusted to. It was on the hard side, so I softened it up a few threads, but haven't got to test it yet.

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