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ralton



Member Since: 04 Feb 2010
Location: Durban
Posts: 153

South Africa 2007 Defender 90 Puma 2.4 SW Zermatt Silver
EGR blanking
It's been a while since i've been here and i don't see any recent discussion on this:
What is the latest on blanking the EGR? Has the "engine light comes on" problem been solved?
How do i go about doing this in SA?
Cheers www.ralton.co.za
Post #135318 29th Mar 2012 4:49am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2633

South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
Re: EGR blanking
ralton wrote:
It's been a while since i've been here and i don't see any recent discussion on this:
What is the latest on blanking the EGR? Has the "engine light comes on" problem been solved? How do i go about doing this in SA? Cheers



Ralton, I have done it via a BAS remap. Not cheap - close to R6K - but well worth it. Thumbs Up

I re-upload the factory map before I send it to the dealer.

I also have 2 maps from BAS - one performance, which I use everyday, and one factory with EGR-shut which I use when overlanding. --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ
Post #135370 29th Mar 2012 9:01am
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ralton



Member Since: 04 Feb 2010
Location: Durban
Posts: 153

South Africa 2007 Defender 90 Puma 2.4 SW Zermatt Silver
Thanks Naks
So you haven't actually blanked the EGR, you've got software that keeps the EGR colsed? www.ralton.co.za
Post #135389 29th Mar 2012 10:02am
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bell-auto-services



Member Since: 08 Jul 2007
Location: North Yorkshire
Posts: 2232

United Kingdom 2013 Defender 110 Puma 2.2 USW Orkney Grey
It can be blanked if the software is told to remove the fault for it.

Pete
Post #135390 29th Mar 2012 10:03am
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ralton



Member Since: 04 Feb 2010
Location: Durban
Posts: 153

South Africa 2007 Defender 90 Puma 2.4 SW Zermatt Silver
... but probably wouldn't need to be removed if the software keeps it closed? www.ralton.co.za
Post #135395 29th Mar 2012 10:22am
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bell-auto-services



Member Since: 08 Jul 2007
Location: North Yorkshire
Posts: 2232

United Kingdom 2013 Defender 110 Puma 2.2 USW Orkney Grey
correct, if its mechaniclly ok then it would stay closed if told. if not the fault memory could be removed for the erg and it deleted from the software instead.
Post #135396 29th Mar 2012 10:23am
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Denis



Member Since: 28 Dec 2010
Location: prairie
Posts: 58

Russia 2010 Defender 110 Puma 2.4 SW Stornoway Grey
ralton wrote:
Thanks Naks
So you haven't actually blanked the EGR, you've got software that keeps the EGR colsed?


I've actually blanked EGR without remap. What I did - fitted 3 blanks (outlet manifold, EGR inlet, EGR outlet), removed EGR cooler with it's pipes with 2 tees, fitted EGR directly to engine (i.e. without EGR cooler). Electrical connection in place and EGR works. No faults (about thousand km).
This mod was made on several Defenders here in Russia with no problems/faults so far. One of benefits of such mod is better working cooling system because of replacing of tees (that's 90 degree pipe connections in cooling system is no good). Really in winter heater blows warm air longer on idling then before mod was done.
Of course firstly I cleaned and greased EGR.

I have a picture how EGR fitted back without cooler - it connects to engine (where EGR cooler was) with grey metal plate.

Click image to enlarge

Cheers Puma 110
Post #135451 29th Mar 2012 2:41pm
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2633

South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
Denis wrote:
I've actually blanked EGR without remap. What I did - fitted 3 blanks (outlet manifold, EGR inlet, EGR outlet), removed EGR cooler with it's pipes with 2 tees, fitted EGR directly to engine (i.e. without EGR cooler). Electrical connection in place and EGR works. No faults (about thousand km).


Denis,

if I understand you correctly, the EGR is still connected to the engine, but no exhaust gases goes through? --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ
Post #135453 29th Mar 2012 2:50pm
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Denis



Member Since: 28 Dec 2010
Location: prairie
Posts: 58

Russia 2010 Defender 110 Puma 2.4 SW Stornoway Grey
Naks wrote:
the EGR is still connected to the engine, but no exhaust gases goes through?

Exactly Puma 110
Post #135455 29th Mar 2012 2:51pm
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Lorryman100



Member Since: 01 Oct 2010
Location: Here
Posts: 2686

I did a lot of research and pestered a few people to find out what would be involved in blanking the EGR. The outcome of this study was to just have the EGR closed all the time by the remap software I have from Alive tuning. Both Gary and Pete can offer this mod and it works out cheaper than going to the additional expense of totally removing the EGR. Also you still need a software fix to stop the MIL illuminating and the recorded DTC's. If the MIL doesn't bother you can unplug the EGR valve and this gives the same results as a software patch except for the illuminated MIL and logged DTC's (P1402, P1409). If you unplug the EGR ensure that you hear the 5x chukka chukkas on shut down as this tells you that the valve is closed, then unplug.


Click image to enlarge


Below was my ideas on blanking the EGR using the Entreq inlet manifold and completely removing the EGR cooler and blanking the exhaust manifold. I was then going to drill the cooler/exhaust manifold blank and fit a new thermocouple direct into the manifold. I never done this as it would invalidate my warranty and was working out quite expensive plus I would still have needed the software fix. The EGR closed function came with the Alive tune so the blanking kit was never pursued.









HTH Brian.
Post #135456 29th Mar 2012 2:51pm
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Denis



Member Since: 28 Dec 2010
Location: prairie
Posts: 58

Russia 2010 Defender 110 Puma 2.4 SW Stornoway Grey
In my mod faults may appear when revs 3000 and more on 3 or 4 gear for some long time - thats experience of other guys. But I haven't yet any.

Brian - this mod dirt-cheap - only self-made blanks and 3 evenings of work because of very tight place. I agree remap is better solution. ANd I didn't connect pipes that you marked, I replaced cooler WITH it's pipes and 2 tees and rest pipes were connected directly
Cheers Puma 110
Post #135459 29th Mar 2012 3:16pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20292

United Kingdom 
With closing the EGR instead of removing it or blanking it is it possible to have it closed by software available to most garages? Or does it have to be done with unique performance software like Alive ect? With this I'm not talking about a re-map just closed EGR. And with the closed EGR would there be much of a difference noticeable?
Post #139162 14th Apr 2012 9:34am
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Markh



Member Since: 24 Jul 2010
Location: Grantham
Posts: 33

England 2010 Defender 110 Puma 2.4 XS CSW Java Black
This might seem a very basic question but what advantages are seen by blanking the EGR whatever method is used? is it about performance or MPG or something else? would appreciate understanding for those of you that have done this what benefits you've seen?

Sorry for the obvious question but interested to see with fuel prices moving the way they are if this is worth looking into! "Twenty years from now you will be more disappointed by the things you didn’t do than by the things you did..."
Post #139181 14th Apr 2012 12:38pm
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

United Kingdom 
The EGR valve is an emissions control measure. The purpose is to reduce Oxides of Nitrogen (NOx).  Undernormal combustion, Nitrogen(N2)Oxygen (O2) in the air and hydrocarbons (HC) in the fuel combine into water(H2O) Carbon dioxide (CO2) and the Nitrogen remains unchanged.  Under very hot combustion temperatures, the Nitrogen reacts with the other two byproducts and forms Nitrogen oxide (NO).  After being released into the atmosphere, it picks up another Oxygen and becomes Nitrogen dioxide (NO2).  In the presence of sunlight, it combines with other compounds like Hydrocarbons and forms Smog.  Since exhaust gas is inert (very stable) it doesn’t burn again.  So by being introduced into the combustion chamber, it will lower combustion chamber temps enough so that the Nitrogen doesn’t react with the other compounds and is passed unchanged out the exhaust thus not contributing to smog.  

The problem is that exhaust gas also contains soot, which can clog up the inlet manifold. The valve itself can also be an obstruction in the inlet pipe work depending on the installation, which is never good. As NOx isn't tested for at MOT time, it's no big deal to remove (or deactivate) it, although there are probably some polar bears who'd disagree. Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #139185 14th Apr 2012 1:00pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20292

United Kingdom 
LandRoverAnorak wrote:
The EGR valve is an emissions control measure. The purpose is to reduce Oxides of Nitrogen (NOx).  Undernormal combustion, Nitrogen(N2)Oxygen (O2) in the air and hydrocarbons (HC) in the fuel combine into water(H2O) Carbon dioxide (CO2) and the Nitrogen remains unchanged.  Under very hot combustion temperatures, the Nitrogen reacts with the other two byproducts and forms Nitrogen oxide (NO).  After being released into the atmosphere, it picks up another Oxygen and becomes Nitrogen dioxide (NO2).  In the presence of sunlight, it combines with other compounds like Hydrocarbons and forms Smog.  Since exhaust gas is inert (very stable) it doesn’t burn again.  So by being introduced into the combustion chamber, it will lower combustion chamber temps enough so that the Nitrogen doesn’t react with the other compounds and is passed unchanged out the exhaust thus not contributing to smog.  

The problem is that exhaust gas also contains soot, which can clog up the inlet manifold. The valve itself can also be an obstruction in the inlet pipe work depending on the installation, which is never good. As NOx isn't tested for at MOT time, it's no big deal to remove (or deactivate) it, although there are probably some polar bears who'd disagree.

Makes sense what your saying. As a comment above what is the improvement MPG or performance or both? It seems obvious to me that putting re-circ gasses back through isn't a great thing Neutral
Post #139222 14th Apr 2012 3:52pm
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