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Thread: Re: What Is Pulsing?

  
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    ope126's Avatar
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    Re: What Is Pulsing?

    Hi All,

    I have done a lot of searching on this topic, however I feel that I have some additional questions that need some specific advice.

    I am looking at doing the 2.2L Airbox or 1.9CDTi Airbox mod on my 2004 Astra SRi Turbo.
    However after doing some research I have found out that with the 2.2L Airbox it positions the AFM (Air Flow Meter) very close to the Turbo. It has been said that this causes "Pulsing", any idea what that is?

    From what I have read only the 2.2L Airbox mod suffers from pulsing due to the position of the AFM. Given that the 1.9CDTi assembly only positions the AFM about 5cm futher away, does it make that much of a diiference. Or does it actually effect both?

    Is it more to do with heat, as with the 2.2L Airbox it does position the AFM directley over the Turbo.


    Glenn
    2003 Holden Vectra CDXi 3.2L V6 (ZC) Star Silver

    2004 Holden Astra SRi Turbo (TS) Star Silver

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    theblueraven's Avatar
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    wassa matter our answers in australia not good enough for you? :P

    as i said there, i havent come across anyone on half a dozen astra sites has ever had any problems with pulsing that i have seen/read/heard of, and many of us have the AFM as close to the turbo as the 2.2 airbox mod. I wouldnt worry about tdo this mod, hundreds of people by now must have done it and i havent heard of any ill-effects, only slight benefits.
    324hp @20psi
    13.9@103mph 1/4 mile must practice more!
    www.opelaus.com <- australian opel site

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    Quote Originally Posted by theblueraven View Post
    wassa matter our answers in australia not good enough for you? :P
    lol.... nice one!!
    Regal 3.5+ 325map
    2003 Astra Turbo

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