kazazza
Member
Registered: 5th Oct 09
Location: Herne Bay, Kent
User status: Offline
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What are the benefits and disadvantages of blanking the EGR valve?
Why do people do it?
How long roughly does it take?
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JaffaTB
Member
Registered: 7th Oct 09
Location: Sheffield, South Yorkshire
User status: Offline
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depends what engine, on my 1.2 8v it takes about 30min
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moka
Member
Registered: 11th Mar 06
User status: Offline
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He has a x16xe, im thinking about doing it on my x14xe. Car is very jerky and been told it could be EGR valve needs a clean. If im going to clean it i should also block it off... im not 100% sure why, would also like to know...
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davcohen
Member
Registered: 1st Nov 03
Location: North London
User status: Offline
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took about 10 mins on my 1.8 mk4 astra and after it ran so much smoother
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djgritt
Premium Member
Registered: 1st Nov 07
Location: Dorset Drives: Focus ST / Hyundai i20N
User status: Offline
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Ideally on a 14/16XE you need to take the upper inlet manifold off for improved access
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IvIarkgraham
Premium Member
Registered: 27th Mar 04
Location: Ellesmere Port, Cheshire
User status: Offline
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pain in the arse to get to on an x16xe
takes me about 40mins to do
and ive done it a few times as cleaning it / blocking it off doesnt seem to work
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kazazza
Member
Registered: 5th Oct 09
Location: Herne Bay, Kent
User status: Offline
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Anyone got any ideas about why it should be done/advantages and disadvantages? Time is the least of my worries tbh.
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IvIarkgraham
Premium Member
Registered: 27th Mar 04
Location: Ellesmere Port, Cheshire
User status: Offline
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to my knowledge
the egr valve puts hot exhaust gasses back into the inlet to help with emmissions i think
so by removing it there will be not hot air in the inlet making the air coming into the engine cooler and more dense causing a slightly higher bhp
i may be wrong though
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N4_RUE
Member
Registered: 14th Feb 09
Location: Bolton, Greater Manchester
User status: Offline
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i did it to mine when it was a 14 engine went bang 2 weeks later
85 000 on the clock
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JaffaTB
Member
Registered: 7th Oct 09
Location: Sheffield, South Yorkshire
User status: Offline
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early corsa engines dont have them, my k reg 1.2 8v didn't but my p reg one does
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Eddx14xe
Member
Registered: 12th Jan 10
Location: Hertfordshire
User status: Offline
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Surly the egr wouldnt of caused it to go bang?
if you blank it off and leave the egr to vent to atmoshphere e.g tie it up somewhere it wouldnt cause any problem at all. Just means the engine has colder air in it
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Crana
Member
Registered: 20th Jan 09
Location: Newcastle
User status: Offline
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my x14xe was keep cutting out so I blanked it off and it's been ok since not noticed much of a difference in power wise
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Winemaker
Member
Registered: 8th May 07
Location: Down Under
User status: Offline
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It needs to be done correctly, if you are just blocking off the secondary pump which is on the exhaust manifold it's not going to do stuff all except look a little neater in the engine bay. You need to remove the ICV at the back and blank it off as well or swing it to the side a bit after blanking it off so it can still push the ICV rod in and out. And the EML will eventually come on and stay on so you will need to get your ecu re-programmed, it's been a bloody long time since I did this so all the info' may not be correct.
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Sean-B
Member
Registered: 1st May 07
Location: Wolverhampton Drives: 200SX S14a
User status: Offline
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quote: Originally posted by Winemaker
It needs to be done correctly, if you are just blocking off the secondary pump which is on the exhaust manifold it's not going to do stuff all except look a little neater in the engine bay. You need to remove the ICV at the back and blank it off as well or swing it to the side a bit after blanking it off so it can still push the ICV rod in and out. And the EML will eventually come on and stay on so you will need to get your ecu re-programmed, it's been a bloody long time since I did this so all the info' may not be correct.
EGR not ICV
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Warren G
Member
Registered: 14th May 06
Location: Kent
User status: Offline
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on a desiel, at least
the idea of the egr valve is to cool the intake charge, bekieve it or not!
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JaffaTB
Member
Registered: 7th Oct 09
Location: Sheffield, South Yorkshire
User status: Offline
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sure my 1.2 8v seemed to pick up better after i did this, eml light did come on a few times though
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Winemaker
Member
Registered: 8th May 07
Location: Down Under
User status: Offline
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quote: Originally posted by Sean-B
quote: Originally posted by Winemaker
It needs to be done correctly, if you are just blocking off the secondary pump which is on the exhaust manifold it's not going to do stuff all except look a little neater in the engine bay. You need to remove the ICV at the back and blank it off as well or swing it to the side a bit after blanking it off so it can still push the ICV rod in and out. And the EML will eventually come on and stay on so you will need to get your ecu re-programmed, it's been a bloody long time since I did this so all the info' may not be correct.
EGR not ICV
I stand corrected, thankyou
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AlexW
Member
Registered: 25th Oct 08
Location: Essex
User status: Offline
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Really suprised people have no clue about this mod.
Blanking it does mean that the intake air is slighty cooler, but it wont be enough to notice at all.
You need to keep the EGR valve pluged in so that the ECU light WONT come on, in thery anyway.
The SAI is nothing to do with the EGR, and moving the EGR valve (tieing it up somwhere) dont mean its vented to air as the in and out are under the EGR itself.
Its job in a standard engine is to help with the burn, in thery it adds a couple of MpG, otherwise its just for emissions. SAI is also purly for emmissions, but that wont make a car fail a mot, My tigra went through a perfectly strict MOT without EGR or SAI.
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Warren G
Member
Registered: 14th May 06
Location: Kent
User status: Offline
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not stricty true
The EGR valve helps your car more efficiently and completely burn fuel by recirculating a portion of your exhaust and running it through the combustion process again. This results in a cooler, more complete burn of the fuel which decreases you car's noxious emissions by prohibiting the formation of some harmful gases.
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moka
Member
Registered: 11th Mar 06
User status: Offline
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quote: Originally posted by AW06
Really suprised people have no clue about this mod.
Blanking it does mean that the intake air is slighty cooler, but it wont be enough to notice at all.
You need to keep the EGR valve pluged in so that the ECU light WONT come on, in thery anyway.
The SAI is nothing to do with the EGR, and moving the EGR valve (tieing it up somwhere) dont mean its vented to air as the in and out are under the EGR itself.
Its job in a standard engine is to help with the burn, in thery it adds a couple of MpG, otherwise its just for emissions. SAI is also purly for emmissions, but that wont make a car fail a mot, My tigra went through a perfectly strict MOT without EGR or SAI.
Right i understand what your saying but why after saying what you and others have said would you want to blank it off? It seems it would make no difference (or very little).
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AlexW
Member
Registered: 25th Oct 08
Location: Essex
User status: Offline
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^Because they go wrong so offen, A brand new EGR is over £100, Blanking plate is under £10.
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