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Thread: EGR removal

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    Default EGR removal

    Hi all i keep reading on here about EGR getting clogged etc
    So my question is why cant it be removed ?
    if its because it is connected to the ecu why cant you leave the motor connected and just fasten it out the way then plate over the hole where the erg was fitted
    Graham

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    Full Member Big Sig's Avatar
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    IIRC it looks for a flow, not just that its there, although it depends on engine.
    Now I need a turbo to keep up!

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    Sorry its a cdti 150 derv burner

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    Regular Member rushy's Avatar
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    Vehicle : SRi


    Engine : Z22SE (2.2 Petrol)

    Year : 2004

    Mileage : 137000

    Default

    Quote Originally Posted by Big Sig View Post
    IIRC it looks for a flow, not just that its there, although it depends on engine.
    I wonder how it actually senses the flow and could it be fooled? The 2.2 petrol can just be blanked, you keep the EGR in the loom still cos all it monitors is the actuation of the valve not the flow. Now if the CDTi monitors flow, and as we know you can reduce the flow by fitting a gasket then there is some tolerance. So lets just say you could take it out of the intake system and blank the intake and put it into the zorst system via a T piece and then back into the zorst, it would still get flow of the same hot gasses, I wonder................................

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    I have just been told by a AA man they are provided with a blanking plate to fit on saab's they just clean the egr with a spray and fit the plate he says on holes in the plate

    + another person has told me to remove the egr fit a plate then spacers then the egr back on but you need longer studs and bolts
    The spacers let the egr work as normal

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    Quote Originally Posted by jacko52 View Post
    I have just been told by a AA man they are provided with a blanking plate to fit on saab's they just clean the egr with a spray and fit the plate he says on holes in the plate

    + another person has told me to remove the egr fit a plate then spacers then the egr back on but you need longer studs and bolts
    The spacers let the egr work as normal
    PS I DONT NOW IF THESE WILL WORK ITS ONLY WHAT I HAVE BEEN TOLD
    Jacko

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    Full Member Big Sig's Avatar
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    Quote Originally Posted by rushy View Post
    I wonder how it actually senses the flow and could it be fooled? The 2.2 petrol can just be blanked, you keep the EGR in the loom still cos all it monitors is the actuation of the valve not the flow. Now if the CDTi monitors flow, and as we know you can reduce the flow by fitting a gasket then there is some tolerance. So lets just say you could take it out of the intake system and blank the intake and put it into the zorst system via a T piece and then back into the zorst, it would still get flow of the same hot gasses, I wonder................................
    I see a plan forming
    Now I need a turbo to keep up!

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    Quote Originally Posted by rushy View Post
    I wonder how it actually senses the flow and could it be fooled? The 2.2 petrol can just be blanked, you keep the EGR in the loom still cos all it monitors is the actuation of the valve not the flow. Now if the CDTi monitors flow, and as we know you can reduce the flow by fitting a gasket then there is some tolerance. So lets just say you could take it out of the intake system and blank the intake and put it into the zorst system via a T piece and then back into the zorst, it would still get flow of the same hot gasses, I wonder................................
    How dose it monitor flow ? i thought it was just a valve or dose it work on heat from the engine exhust gas? that makes it open and close
    Jacko

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    Vehicle : SRi


    Engine : Z22SE (2.2 Petrol)

    Year : 2004

    Mileage : 137000

    Default

    Dont know mate, maybe like the MAF does. My 2.2 petrol is blanked but the ECU only monitors the movement of the EGR, so its still plugged in but not mechanically. The CDTi works differently. I have the same CDTi engine in the Mrs Punto, but badged as a JTD, I might have a play with my Idea at some time, but to do it on the cheap all I would have to do is blank the hole where the EGR goes back into the intake and add some tubing to the rear and vent it to atmosphere. Of course this would only be a test but it is deffo a possibility.

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    the egr measures flow in conjunction with the air mass meter basically that monitors how much air passes through and if there is no flow from the egr there is not enough air if its too much then there is too much air have a read of this this will explain

    so the answer is no we cant block off the egr valve on the cdti 150 unless you can disable it with tech 2

    http://www.ms-motor-service.com/xima...099_en_web.pdf

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