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Thread: EGR blanking once an for all

  
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    at0m's Avatar
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    EGR blanking once an for all

    Hello,

    I want to blank my EGR for good however something just doesn't add .

    Where does all the gas go if you block the circuit by blanking the EGR valve .

    How does this system works ? I really don't want exhaust gas going in other places or accumulating somewhere .

    Thanks !

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    Damon999's Avatar
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    Someone will have to clarify this as I'm not 100% on it, but I think the feed to the valve from the exhaust is just a channel in the block. If you blank the valve off, the gases will fill this chanel but go no further just like when the valve is closed, and the rest of the gases will just continue out the exhaust pipe.

    I can't think of any reason why any damage or problems would occur from this.

    Hope it helps.

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    As far as I am aware, the EGR is designed to recirculate unburnt hydrocarbons back into the burn process. Blanking off the EGR therefore would mean that these particles have nowhere to go except out the exhaust. This may cause problems with emissions at MOT time.

    HTH

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    AstraVXR's Avatar
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    So how exactly do you block the EGR off and does it actually make a difference to the car???Is there any need for it??
    Astra 1.6 16v SXI 5DR Star Silver

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    One method is to use a thin piece of metal, like that used in Coke cans and cut it to the shape of the EGR gasket. You then replace the original gasket with your blanking plate and Hey Presto!!

    Like I said before though, doing this will result in higher exhaust emissions so be prepared to fail the next MOT.

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    The EGR does so little to the level of emissions that you'd be hard pushed to fail the MOT. If your CAT is working at all it's difficult to get a Vauxhall engine to fail the emissions test.

    My housmate's old 12-year-old Corsa's CAT was totally shot (the fumes coming out of it would make your eyes water if you were following it), and it passed it's MOT emissions no problem.

    You're pretty safe blanking the EGR off. If your emissions are off wack then the enigine management light will come on anyway.

    Oh, and fosters cans are better for blanking the EGR - steel seems to work better than aluminium.
    2007 Metro Blue 5 door Mk5 Elite 1.7CDTI
    6th Vauxhall (4th Astra) in 10 years...plus a couple of other sheds...

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    What's the point of this then?
    B.A.D.

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    sorry to bring up an old thread, but ive been to a few car shows recently, and ive seen alot of cars with an EGR Blank in the spec list, mainly mk2/3 golfs.

    Does this actually help the engine in any way to do so, maybe by not letting exhaust gasses in it brings in fresher air instead and might give a bit more power?
    Astra Sold! Now its back! Sold Again! Who knows whats going on!

    Currently Running MK1 1.8 MX5 with LSD awaiting boost, and a Red UK DC2

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    No blanking the egr dont give more bhp, although some will try to state that it does, only reason the egr blanked on my motor is because the valve itself buggered and after another i decided to blank it off and get vauxhall to deleate the software for the egr.
    What goes around,comes around!!

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    If you get the ECU map updated to remove the EGR then it should increase throttle response a little on some occasions as the ECU doesn't have to wait for the EGR to close when you floor it. Beyond that it is unlikely to make any performance difference, the EGR is only open under certain conditions so under load it'll be closed, but when cruising it will be open.

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