Home > Puma (Tdci) > EGR blanking |
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ralton Member Since: 04 Feb 2010 Location: Durban Posts: 153 |
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 |
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29th Mar 2012 4:49am |
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Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2633 |
Ralton, I have done it via a BAS remap. Not cheap - close to R6K - but well worth it. 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 |
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29th Mar 2012 9:01am |
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ralton Member Since: 04 Feb 2010 Location: Durban Posts: 153 |
Thanks Naks
So you haven't actually blanked the EGR, you've got software that keeps the EGR colsed? www.ralton.co.za |
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29th Mar 2012 10:02am |
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bell-auto-services Member Since: 08 Jul 2007 Location: North Yorkshire Posts: 2232 |
It can be blanked if the software is told to remove the fault for it.
Pete |
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29th Mar 2012 10:03am |
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ralton Member Since: 04 Feb 2010 Location: Durban Posts: 153 |
... but probably wouldn't need to be removed if the software keeps it closed? www.ralton.co.za
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29th Mar 2012 10:22am |
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bell-auto-services Member Since: 08 Jul 2007 Location: North Yorkshire Posts: 2232 |
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.
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29th Mar 2012 10:23am |
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Denis Member Since: 28 Dec 2010 Location: prairie Posts: 58 |
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 |
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29th Mar 2012 2:41pm |
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Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2633 |
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 |
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29th Mar 2012 2:50pm |
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Denis Member Since: 28 Dec 2010 Location: prairie Posts: 58 |
Exactly Puma 110 |
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29th Mar 2012 2:51pm |
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Denis Member Since: 28 Dec 2010 Location: prairie Posts: 58 |
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 |
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29th Mar 2012 3:16pm |
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custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20292 |
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?
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14th Apr 2012 9:34am |
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Markh Member Since: 24 Jul 2010 Location: Grantham Posts: 33 |
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..." |
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14th Apr 2012 12:38pm |
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LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11324 |
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 |
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14th Apr 2012 1:00pm |
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custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20292 |
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 |
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14th Apr 2012 3:52pm |
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