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Allan

Member Since: 09 Sep 2009
Location: Perth
Posts: 166

2008 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black

EGR valve, standard tune.

I asked the dealer today if, when L.R warranty no longer applies, the ERG could be shut off on the standard tune. Answer at this time, don't know but will let me know. This could be an easy fix if possible, but I very much doubt it. Been there on Subaru modifications, costs are needed

.

Allan

9th Sep 2011 2:41pm

BigMike

Member Since: 13 Jul 2010
Location: Lancashire
Posts: 2253

Pete at Bell Auto Services can do this for you. He's a member here. google his firm.

9th Sep 2011 2:44pm

Dave-H

Member Since: 08 Feb 2011
Location: Surrey
Posts: 1507

2007 Defender 90 Puma 2.4 HT Tonga Green

Yes it can be done easily .. as said Pete [Bell auto services] or Ian [IRB Developments] .. both on here, both can do

Guns and Landrovers .... anything else is irrelevant.

9th Sep 2011 3:46pm

Defendit

Member Since: 31 Oct 2010
Location: Down Under
Posts: 26

2011 Defender 110 Puma 2.4 SW Keswick Green

Re: EGR valve, standard tune.

Allan wrote:
could be an easy fix if possible, but I very much doubt it.

Allan

There is an easy fix! Just unplug it. You will get a MIL warning light which is easily cleared with a Scangauge if it bothers you, but after a while you won't notice.

What you will notice is a significant reduction in fuel consumption and the removal of the embarrassing clatter at switch off. I'm at least 2L/100km better off on the highway and more around town.

As far as I can tell the MIL's only function is to report an EGR or fuel pressure issue. Obviously you would know about the EGR issue as it's disconnected. I would expect the majority of Defender drivers would notice a fuelling problem without a warning light so it's no great loss.

I'd be interested to hear from anyone who knows more than what the service manual reveals about the MIL functions.

9th Sep 2011 11:09pm

Lorryman100

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

Alive tuning and BAS are site sponsors and would be more than capable of adding the EGR closed function to a standard tune. However you would need to go to them to get this done or be in possession of an Alien Tech remap interface to download the original fuel file to allow that to be emailed to the tuners so that the file could be modified and returned to you so it can be installed first onto the remap interface and then on to the Defender. The downside of not having the remap interface is that once it is on, it is on for good or until you get a software update at the dealers which would overwrite this upgrade and you would need to pay another visit to the tuners to get it reinstalled.
If you own a BBS MSV2 you can use the FFL to upload the new fuelling files as BAS remaps are sold/supported through the BBS site so you wouldn't need the remap interface.
Unplugging the EGR valve will illuminate the MIL lamp and will log DTC's P1402 and P1409. I ran mine for a few months with the EGR plug removed until the Defender was remapped.

Click image to enlarge

I reinstalled the EGR plug once the defender was remapped (Without EGR closed upgrade) to keep the combustion temp lower with the new fuel file. As I'm sure we all know that the EGR gases being recycled into the Inlet manifold and then into the combustion chamber actually lower the combustion temp therefore reducing power output as a by product of the recycled emissions so a tuned fuel file with the EGR unplugged could theoretically damage the engine and I was not prepared to chance it (warped exhaust manifold,Turbo vane damage both came to mind initially). However once the new EGR closed function became available and had been tested, this takes into account the combustion temp/Boost pressure to compensate for the higher temp burn of not having recycled exhaust emissions entering the combustion chamber.
I see benefits and downsides to having the EGR closed all the time, the benefits are a crisper more responsive throttle, an uncoked Inlet manifold and a better fuel return. The downside would be the eventual coking closed of the EGR valve over time meaning if the remap was taken off the chances are the MIL would illuminate and you would get EGR related DTC's. Though for me in the long term, next September that is, the whole assembly is getting removed. The Entreq EGR killer manifold will be fitted along with the removal of the gas mixer pipes and the heat exchanger (EGR cooler) allowing the exhaust manifold to be blanked and the fitting of an EGT Thermocouple direct into the manifold.

Brian.

11th Sep 2011 2:44pm

Allan

Member Since: 09 Sep 2009
Location: Perth
Posts: 166

I have decided to go for a re map in December/January as I'm preping for another trip away at the moment. Thanks for your imfo.

Allan

12th Sep 2011 1:03am

pannawonica

Member Since: 21 Nov 2010
Location: Clackline Western Australia
Posts: 568

I am waiting for my EGR remap to arrive from Alive. Thanks Lorryman I did have some concern about the improved combustion with the removal of exhaust gases in the induction system. However I don't really work my vehicle to hard especially in very high temperatures.

12th Sep 2011 7:42am

Naks

Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638

2010 Defender 90 Puma 2.4 SW Alpine White

Lorryman100 wrote:
Though for me in the long term, next September that is, the whole assembly is getting removed. The Entreq EGR killer manifold will be fitted along with the removal of the gas mixer pipes and the heat exchanger (EGR cooler) allowing the exhaust manifold to be blanked and the fitting of an EGT Thermocouple direct into the manifold.

Brian,

I wasn't aware Entreq had released their EGR killer - nothing on their website about it? --
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

Last edited by Naks on 12th Sep 2011 10:20am. Edited 1 time in total

12th Sep 2011 8:21am

Lorryman100

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

Naks, it is not on the website yet. The problem just now is how to apply a software patch (basically a tuned standard file with EGR closed) to disable the MIL. If you have a remap with the EGR closed then this is do able just now as the MIL is taken care of. Unless the remap allows the self clean cycle then the MIL will illuminate after each shut down. I have the Alive tune and the EGR is closed 100% of the time so I know it is bypassed and I have tested this by disconnecting the EGR plug for a couple of days whilst running the remap with no MIL/DTC issues at all.

Brian.

12th Sep 2011 10:08am

Naks

Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638

Lorryman100 wrote:
Naks, it is not on the website yet. The problem just now is how to apply a software patch (basically a tuned standard file with EGR closed) to disable the MIL. If you have a remap with the EGR closed then this is do able just now as the MIL is taken care of.

I see. I have the BAS remap with a standard tune with EGR closed, and a tuned one also with EGR-closed.

The reduction in fuel consumption is quite amazing

--
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

12th Sep 2011 10:17am

Lorryman100

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

With the EGR closed the engine is definitely more responsive and you do get a better fuel return.

12th Sep 2011 10:29am

Allan

Member Since: 09 Sep 2009
Location: Perth
Posts: 166

So the question remains, in a high temp country like Australia/Africa, with temps in the high 30/40 cel at times, towing and loaded to the max, would a flash and EGR closed tune work. A larger intercooler I know is needed, but is this going to solve the high exhust temps even with the cat and centre muffler gone. I am not very with it on oil burner tunes, Subaru WRX was my last toy, so any help would be great

alan

12th Sep 2011 2:16pm

Naks

Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638

Allan wrote:
So the question remains, in a high temp country like Australia/Africa, with temps in the high 30/40 cel at times, towing and loaded to the max, would a flash and EGR closed tune work.

Allan, IME with the BAS remap, the EGTs are lower than with the standard tune.

Just one example - from the security boom to my parking bay at home is a 200m idle in 2nd gear. When I get to the boom EGT is usually sitting at 320-330C. By the time I get to my parking bay, EGT sits at 190-200C on standard tune, and 160-170C on remap.

However, purely for fuel economy reasons I do not use the tuned map when overlanding, I use the standard tune with closed EGR. Otherwise the temptation to put foot would be too great to resist

--
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

12th Sep 2011 2:38pm

Allan

Member Since: 09 Sep 2009
Location: Perth
Posts: 166

Thanks for that Naks, I'l go with it then.

Allan

12th Sep 2011 10:05pm

Molusk

Member Since: 20 Dec 2011
Location: Loire Valley
Posts: 43

2008 Defender 130 Puma 2.4 HCPU Alpine White

Re: EGR valve, standard tune.

Defendit wrote:

There is an easy fix! Just unplug it. You will get a MIL warning light which is easily cleared with a Scangauge if it bothers you, but after a while you won't notice.

What you will notice is a significant reduction in fuel consumption and the removal of the embarrassing clatter at switch off. I'm at least 2L/100km better off on the highway and more around town.

Are you sure there is no risk running with unplugged EGR?
It seems so simple, I wonder why everybody is not doing so.

Other question about EGR: in case of EGR failure, are we stucked? I am soon leaving for a 4-weeks trip to Iceland, and I am considering taking a spare EGR onboard.

9th Jul 2012 2:39pm

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