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  1. #1

    O2 Sensor on turbo

    Hello , where is better use o2 SENSOR on turbo engine , i have on manyfold exshaust and i read for turbo is better after turbo correct? Thanks


  2. #2
    I got mine about 3 inches after the down pipe flange than shoot water in the pipe about 6 inches past that and I haven't had any trouble

  3. #3
    boost junkie skidoochris's Avatar
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    a afr sensor will not last long under working psi

  4. #4
    It must be dry and after the turbo.

  5. #5
    [QUOTE = whittlebeast; 2530961]. Deve essere asciutto e dopo il turbo [/ QUOTE]yes Andy, i read i struction autotune dynojet . Thanks Andy and all guys.

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    Quote Originally Posted by whittlebeast View Post
    It must be dry and after the turbo.
    Understand the dry part, but why after the turbo? Just curious. Thanks

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    GRF + DashPac:) seadoo02xp's Avatar
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    Back pressure before the turbine causes the sensors to read too rich. Steve I'll send you a log with lambda per cylinder and it's pretty clear. The sensors in the manifold read around .75 when actual lambda is .81

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  9. #8
    They are pressure sensitive and the pressure between the motor and the turbo is fairly huge.

    They are not designed to survive the temperatures between the motor and turbo

    If you use any sort of anti-lag it gets really bad.... pressure and temps.

    Andy

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    GRF + DashPac:) seadoo02xp's Avatar
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    The operating range on lsu 4.9 sensors is over 1700 degrees with a peak closer to 2000. They survive in the manifold and have found our egt data is being thrown off by the log manifold . Cyl 1 required 5% more fuel to even all cylinders out.

  11. #10

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    Quote Originally Posted by seadoo02xp View Post
    Back pressure before the turbine causes the sensors to read too rich. Steve I'll send you a log with lambda per cylinder and it's pretty clear. The sensors in the manifold read around .75 when actual lambda is .81
    Thanks for the clarification. Will install in the down pipe where you supplied bung.

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