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Old 15-01-10, 04:25
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dubmandave dubmandave is offline
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Question Benefits of blanking egr valve?

What's the story with the blanking off of the egr valve,what does the valve do,why blank off and the benefits?

Don't ask me, i just drive the damn thing!
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Old 15-01-10, 11:29
Revellbikes Revellbikes is offline
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Default Re: Benefits of blanking egr valve?

There is quite a bit of info on here if you search for it, but as I can't quite get used to the searching facility on here myself I thought I'd save you the effort!

Basically this thread explains all

http://www.vwt4forum.co.uk/showthrea...ing+EGR&page=2

EGR So, why do we have it?

The EGR is simply an emissions reducing measure. When the engine heats up excessively, nitrous oxide is produced and this is one of the worst emissions. To reduce this production, the engine temperature needs to be reduced and the EGR allows recirculated exhaust gas back into the inlet side of the engine. This is a continuous process happens more when the engine temp rises and help to reduce the operating temperature.

It does however, to differing degrees, make the engine less efficient and also curbs the maximum performance.

Some EGR applications can have the mapping of the valve changed to reduce the actuation, and others simply choose to block it off.

Blocking off is not possible on a petrol engine because of the MOT checks. But this is not the case on diesels and it certainly stops the gunge creation, as long as you are aware that the engine is producing more 'naughty' gasses than it was originally intended to.


I hope this helps.

One thing I don't know is where the Valve is or how to fit? I'm going to buy one of the above kits and give it a go!

Cheers
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Old 15-01-10, 12:18
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Default Re: Benefits of blanking egr valve?

This is why you need an EGR Blank plate fitting, I'll be fitting one on the Octavia VRS Next week.

T4 2.5TDI INLET MANIFOLD




New Inlet manifold gaskets & Exhaust also EGR Blanks Plates for the exhaust manifold



EGR Blank plate fitted


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Old 15-01-10, 12:23
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dubmandave dubmandave is offline
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Thumbs up Re: Benefits of blanking egr valve?

Thanxs for the info lads
But does this mean me stripping off parts and getting my mitts dirty

Don't mind,but if it's not broke

Don't ask me, i just drive the damn thing!
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Old 15-01-10, 12:59
Revellbikes Revellbikes is offline
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Default Re: Benefits of blanking egr valve?

Well I'm not too sure. If you get your head under the bonnet there is something that says EGR on it just next to where the throttle cabble attaches to the engine inbetween the engine and the fans (on a 1.9td that is...)

I'm guessing its something to do with that. I think i'm gonna get my hands on one of the kits available off the guy in the link above. Think that has instructions.
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Old 15-01-10, 14:29
Phatty Phatty is offline
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Default Re: Benefits of blanking egr valve?

purely for emissions. Think about it, you have oil vapour coming in through the breather, and now soot coming in from the exhuast. It sticks together and forms than black gunge, which blocks up your inlet manifold and make the EGR valve stick open.

If the EGR valve isn't shut then you are leaking exhaust gases out of the exhaust manifold, which means you won't be getting the boost levels you should be and the turbo will take longer to spool. The pipe to the EGR valve is also known to split. again, losing exhaust gasses which should be spooling your turbo up.

So you blank the damn thing off. No more like, moe more horible stinking hot ait in your engine. Works better if you do de-gunge the inlet and manifold but you don't have to, you should see sharper throttle response just by blanking it off. but all that hot air and gunge isn't helping the engine, and it's a power sapper.

Brookster, those plates look well made, where did you get those from?

Need VAG COM in Yorkshire? PM me...
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Old 15-01-10, 14:47
cumbriankeith cumbriankeith is offline
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Default Re: Benefits of blanking egr valve?

At the risk of thread crashing, how tricky is it to remove the inlet manifold to clean the gunge out? I've blanked the EGR and cleaned it out - it was pretty cruddy after 130k miles. I have a power pipe I'm going to fit and am thinking of sorting the manifold while I'm at it. Fiddly or fun? Any gotchas? Special tools needed? New gaskets?
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Old 15-01-10, 15:59
Phatty Phatty is offline
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Default Re: Benefits of blanking egr valve?

I just wiped it out with petrol soaked rags rather than remove it. The actual inlet pipe was the worst part for gunge.

Need VAG COM in Yorkshire? PM me...
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Old 15-01-10, 16:04
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Bluebird Customs Bluebird Customs is offline
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Default Re: Benefits of blanking egr valve?

don't forget to plug the vac pipes
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Old 16-01-10, 08:03
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Default Re: Benefits of blanking egr valve?

The inlet Gasket is only 5 for a new one, so its worth removing it to give it a good clean.

After the clean with petrol, soapy water and jet wash.







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