Hi all,

I'd like to hear anyone's experiences who have remapped their 4.4 TDV8, or specifically who have also had their DPF 'physically gutted'.

I know the legalities of it, and the MOT requirements for vehicles originally equipped with the DPF but would like to hear first hand experiences and recommendations, if there are any?

Thanks

2012 4.4 TDV8 Autobiography 2012 4.4 TDV8 Autobiography
2005 4.2 V8 SC
2003 4.4 V8

This has been discussed a few times I think. Usually ends up at a discussion about the torque limits of the gearbox and the standard car already being at it….

https://www.fullfatrr.com/forum/topic58100.html?highlight=dpf

https://www.fullfatrr.com/forum/topic51873.html?highlight=dpf

https://www.fullfatrr.com/forum/topic56131.html?highlight=remap

https://www.fullfatrr.com/forum/topic46003.html?highlight=remap

 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Thanks @mjdronfield - I have seen those, and read through extensively this morning whilst works been quiet

What I've failed to find though, are any first hand experiences of having the work carried out.

It seems a bit of a taboo subject, and from the threads highlighted, people tend to get shot down fairly quickly by gearbox torque limits, or legalities.

If anyone has had it done, and would prefer to PM me, please go ahead.

Would also be great to hear from any vehicle remappers on the forum to hear their 2 pence. 2012 4.4 TDV8 Autobiography
2005 4.2 V8 SC
2003 4.4 V8

Yeah, I know what you are saying. I’m sure I saw a video of a guy driving his remapped 4.4 this week somewhere.

I thing if you use a good remapper rather than a tuning box etc, it would be a good start. I had my TD6 remapped by JE Engineering but not bothered doing it to my 4.4….

Interested to know what you end up doing though.

 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

It might be worth you reading the WM to see the difference between UK spec with DPF and Australian spec 4.4’s with no DPF from new.
Mike. G reg 2.5VM Vogue Portofino red 1991- 1999
V reg 2.5td P38 Rioja red 1999- 2006
53 reg td6 Vogue Oslo blue 2006- 2015
11 reg 4.4 TdV8 Vogue SE. Baltic blue 2015- date.
https://www.fullfatrr.com/forum/topic56162...tty+affair

Here we go….



 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Durham Remaps do it all in house.... Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silicon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
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Last edited by DrRob on 30th Aug 2021 7:11am. Edited 1 time in total

Rob, have you had yours done? 2012 4.4 TDV8 Autobiography
2005 4.2 V8 SC
2003 4.4 V8

Hi there,

Dr Rob has not had EGR delete, DPF delete and has not had a remap.

The chap in the above video seems to have had a Remap but not an EGR or DPF delete?. We've been researching this a lot for an offroad project car.

On a 3.6 the EGR and/or DPF delete is plausible (but illegal for road cars).
On the 4.4 the evidence suggests the EGR setup is so intrinsic to the engine gas flows and management that deleting it is very likely to cause more problems. The guy who owns Durham Remaps has apparently deleted the EGR and DPF on his own 4.4 but so far we haven't found anyone else who has tried it successfully. He owns a garage and an MOT station so if it goes tits he's got the immediate solution to fix it.

That is not to say it is impossible but it seems strange it's been done relatively frequently on a 3.6 but not the 4.4

There is also the suggestion that the Australian models had no DPF but we don't know if they have no EGR. Also what software differences between the UK and Aus version. That creates another issue - if you get serviced and the Service garage resets your mapping to UK spec or doesn't have Aus spec it'll be a headache.

Some other things to consider:
It's not really very environmentally friendly.
Also there's the legal perspective... DPF /EGR delete is illegal.
One more thing. If you have an accident and you've got EGR and DPF deleted then your car is modified. Now you won't have in formed your insurance of an illegal mod and there is risk your insurance is invalidated.

Hope that helps...

.

Last edited by Range Rover L322 on 30th Aug 2021 8:07pm. Edited 1 time in total

The person in the video said that his EGR was mapped out rather than removed, which means that engine management won't open the valve during normal operation but will still exercise the valve at start-up or shut-down. This allows the EGR pipe to be blocked/blanked as a preventative against the valve failing to seal properly. Engine management will still ensure that the EGR valve is closed during a DPF regen so that all the extra fuel goes to the catalytic converter to allow the catalytic converter to generate enough heat to burn the carbon in the DPF.

The 4.4 TDV8 in the Australian L322 has EGR but no DPF.

DanPoole wrote:

Rob, have you had yours done?

I know the guy in the video I helped in fitting the deployable steps on his car, I had a call from him a few weeks ago asking if I knew of anyone that would fit a new EGR valve for him? could be a possible cause of the remapping

I’m still not completely clear on the point of trying to delete the EGR and DPF on the 4.4, remap it yes, if you feel that the extra power is needed, get someone who knows what they are doing like JE or Bell, but there aren’t many horror stories of the EGR failing on rhe 4.4 like there are on the 3.6, and as for a DPF delete, if you drive it just in town then once a month go somewhere else and give it a blast to clear it out, pretty simple. I had my 4.4 for 5 years ish and never had an issue with either, with a mix of driving.

Yes the EGR and DPF rob power from the bare engine, but they are designed to do a job, whether you agree with that job isn’t relevant, the emissions levels of the engine needed to be brought down to make it fall within the specs of UK new cars and they’ve done their job, the fact that you can simply plug the car in and change the map on the engine means that they aren’t throttling it to a degree which can’t be overcome by software.. we drive Range Rovers, so we aren’t in the tree bigger bracket, but removing something which is added to give compliance with emissions standards just to liberate a few horses, which can be done with a map just seems daft. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
Fiat 500x 1.4 multiair Lounge 2015
2010 LR D4 Commercial 2.7 TDV6

Anybody replaced the EGR valve on a 4.4? IME of EGR valves on other Diesel engines their functional efficiency declines over time (irrespective of cleaning with Mr Muscle oven cleaner) and should be treated as a service part. Classic symptoms of a tired EGR are hesitancy when applying throttle and less than smooth gear changes (on manual cars this could destroy dual mass flywheels) and on auto boxes this will put extra stress on them. Any diesel engine with a DPF and EGR when used for short urban trips will end badly for the owner or future owner and where do I see most L322’s……
DPF’s won’t restrict performance unless clogged with soot due to aforementioned excessive urban driving or clogged with ash due to poor oil quality or very high miles. Actually removing a DPF will lower the EGT just after the turbo which will hurt low rpm power which is just what you don’t want when trying to get 2.7 tones of metal and leather moving. At higher rpm it can be argued that the improved gas flow capacity will improve hp but that kind of goes against the nature of the engine.
I’ll be burning through £££ running either my current car or an L322 in London’s ULEZ over the next few years but I also have to breath the air and don’t want cars without DPF’s or EGR valves on the road nr me.

I have just cleaned out the plenum chamber and throttle body on mine and the difference is staggering, costs nothing and as good as any remap.
Mike. G reg 2.5VM Vogue Portofino red 1991- 1999
V reg 2.5td P38 Rioja red 1999- 2006
53 reg td6 Vogue Oslo blue 2006- 2015
11 reg 4.4 TdV8 Vogue SE. Baltic blue 2015- date.
https://www.fullfatrr.com/forum/topic56162...tty+affair