No they're not, because they're forced to reduce emissions in cars by governments. And these systems successfully fulfill this purpose. Unfortunately inherently these systems are bad for engine health and longevity, as well as for fuel economy.
So motor manufacturing industry for sure wouldn't apply those systems if they would like to offer more reliable and economic agregates. It is just that they are in a forced situation.

You just have to see the bigger picture here.

Don't want to argue about politics or phylosophy actually.
I'm more interested in any actual technical advice that has real value in this topic.

Just to add my own two penn'orth, leave the EGR and DPF alone on the 4.4.4TDV8.

That is all.

Dunc. The life you have is the only one you'll get; make the most of it.
--------‐--‐-----------------‐------------------‐---------------------------------------------------
2012 4.4 TDV8 L322 Autobiography
2003 TD5 Oslo Blue D2 ES Premium Auto (with mods!)

RRDunc can you explain? Bad experiences or just a guess?

The DPF regen needs the EGR to be able to get up to temperature to regen properly.

There's the additional complication that DPF removal is an MoT fail in the UK.

Dunc. The life you have is the only one you'll get; make the most of it.
--------‐--‐-----------------‐------------------‐---------------------------------------------------
2012 4.4 TDV8 L322 Autobiography
2003 TD5 Oslo Blue D2 ES Premium Auto (with mods!)

Since i have had a Standard Land Rover Map reinstalled ,EGR Blank Removed, Full Exhaust from a Friend, mine is Running Amazing. Do not have a Remap Fitted its not worth it. Mercedes AMG w207
E class Cabriolet
Overfinch L322 4.4 tdv8
1987 sierra rs cosworth 3 door white.
1985 escort rs turbo series one.
1992 sierra sapphire 4x4 cosworth red
1993 sierra sapphire cosworth 4x4 silver
1993 sierra sapphire cosworth 4x4 white
1995 ducati 916sp.

But a remap is something quite different DT.....

Not unless you drove one with a remap , to say the least. Mercedes AMG w207
E class Cabriolet
Overfinch L322 4.4 tdv8
1987 sierra rs cosworth 3 door white.
1985 escort rs turbo series one.
1992 sierra sapphire 4x4 cosworth red
1993 sierra sapphire cosworth 4x4 silver
1993 sierra sapphire cosworth 4x4 white
1995 ducati 916sp.

Lots of remaps out there.
Only ever use Bell Auto Services or Alive Tuning would be my advice 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
--------------------------------------------------

Or JE Engineering…. Only 3 I’d use.

JE did my TD6, Alive Tuning (when they were TD5 Alive) did my Disco 2.

 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

daveturbo wrote:

Not unless you drove one with a remap , to say the least.

Is yours a 4.4 tdv8 Mercedes AMG w207
E class Cabriolet
Overfinch L322 4.4 tdv8
1987 sierra rs cosworth 3 door white.
1985 escort rs turbo series one.
1992 sierra sapphire 4x4 cosworth red
1993 sierra sapphire cosworth 4x4 silver
1993 sierra sapphire cosworth 4x4 white
1995 ducati 916sp.

mjdronfield wrote:

Or JE Engineering…. Only 3 I’d use.

JE did my TD6, Alive Tuning (when they were TD5 Alive) did my Disco 2.

daveturbo wrote:

Is yours a 4.4 tdv8

Yes sir... This is my 4th 4.4SDV8 and everyone has been mapped

RRDunc wrote:

The DPF regen needs the EGR to be able to get up to temperature to regen properly.

There's the additional complication that DPF removal is an MoT fail in the UK.

Dunc.

kokamagi wrote:

Wrong... EGR is the one that lowers exhaust temperature, hence producing the soot that clogs the DPF. For DPF regen increased temperature is indeed needed and this is achieved by shutting off EGR and introducing additional fuel to the exhaust.

You wouldn't fail MoT, if You'd leave an empty shell of DPF in there and write it out of ECU. Of course, you must delete EGR also, because otherwise, you'd fail because of the soot.

WRONG...



 BMW i3 Electric Car
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6