Hi
I just bought a 3.6TD HST 2009.
The car was originally brought from Austria in Greece where I live.So it came with a Diesel particulate filter(DPF)

First modification I wanted to do was something with the excaust system.Give it a little more volume, and depth nothing dramatical
So I went to this popular shop locally.They did not had any experience with the specific car but said we will be better off not removing the dpf filter.That would cause a lot of faults to arise and if we should ever dare to to that, we should first take it to specific garage for DPF calibration and change the software in the ECU.That they got right I quess, as seen mention in many threads in here too.

So from the start they told me since we are not doing something to the DPF I should not excpect much of a change to the sound.I said that many company's in ebay advertising excaust systems promise a variety of sounds depending to the likes of the customer without touching the dpf either!I even took some printed photos of those.They insisted that from those photos they could unterstood that the DPF was removed.
This is what I showed them http://www.ebay.co.uk/itm/281270484518?ssP...1423.l2648

And this one too http://www.ebay.co.uk/itm/121283800153?ssP...1423.l2648

I even wrote to these two company's,they both said that DPF stays.

I think my people, they must had confused that front silencer as the replacement of the DPF

Why am I saying this?Cause in their construction in my car,they just used plain stainles steel tubes.They used a flange to attached them to the DPF,just in case I want my stock system back one day.These tubes go all the way to the tips.Without incorporating any front silencer(which obviously its the one that determines the sound...and not only)

I'm using a photo used again in this forum http://www.rrsport.co.uk/gallery/albums/us...F.jpg.Just to remind you how the stock system looks like.

They removed number 8(front silencer) and number 9(left and right rear silencer) and just used plain stainless steal tubing all the way to the Stormer tips of my car.

The sound indeed did not change much.But when it got wormer I you could tell a difference.First day I did not do that many miles to check,but strangely when I will lift my foot from the gas pedal on a downhill, there was a deep slightly annoing sound transfered into the cabin.
Next day however,the massage "dpf full see handbook" came on the dash after driving for a while.

I did a little bit of home work,and found out that this is a major issue with cars that came with the filter, 2009 onwards in specific European markets.

I came through also the "regeneration process",the remedy, that consists the burning of the particulates trapped by the filter to prevent obstruction to the free flow of excaust gasses.

This process consists of driving the car for 15-30 minutes with study revs above 2500 up to say 3500.

I had tried this process 3 times today on my way to another town and back.I could not get the massage off.

So I'm left wondering.Was this a coincidence?Was it about to get full and it has nothing to do with the new excaust?I don't think so..and neither do you.I just bought the car and can not know if this was a habit..

So what happened here?Can regeneration process take place in my excaust now I change it?I read that in the process of active regeneration(ECU controled),the ECU makes small adjastments to the injection timing to increase the temprature in the excaust and start the regenaration process.Does this new shape in my excaust hinders this process?
Could it be the sensor inside the DPF?I read quite a few solve the problem by replacing it.

Have you done the regeneration process with SDD machine
or you were just driving around reeving the car mad?

Is so i am not surprised the message stayed on

More like your second quess..
I wasted more that half of tank petrol!
But why are you saying this?A diagnostic tool is used as plan B, after you fail 3 times of doing what I described doing.
That is a procedure that I read in this forum by several owners,and its in the manual too!

I'm attaching what is in the manual

Regeneration procedure
If
DPF FULL, SEE HANDBOOK
appears in the
message centre, carry out the following
procedure.
Note:
At all times during this procedure you
should observe all releva
nt speed limits, laws,
and regulations. Always ta
ke account of traffic
and weather conditions, and drive with
consideration for other road users.
1.
Drive the vehicle until the engine reaches
normal operating temp
erature. The engine
should not be left idli
ng to achieve working
temperature.
2.
Drive the vehicle for a further twenty
minutes, keeping the speed above 48 km/h
(30 mph) and the engine speed between
2500 and 4000 rpm.
Note:
Keeping the engine spee within this
range may require the use of command
shift.
3.
If regeneration is su
ccessful the warning
message will disappear. If the message
remains repeat the process.
Note:
When driving off-road during the
regeneration process, gr
eater accelerator pedal
use may be required.
Note:
If the warning message remains after
following the rege
neration proces
s three times,
contact your Dealer/Aut
horised Repairer for assistance

Here is an update concerning my issue with the dpf.

A month ago I decided to get rid of the damn thing.I thought I should treat my self for Christmas .To be honest I did not had any more warning lights or other kind of issues with the dpf prior to the removal.But this was done as part to my decision to tune the engine too when reprograming for the removal.

So I went to the dealer of these people http://allcartuning.com/en/software-tuning/dpf-remove.html
in Athens.

The dealer had to reprogram the ecm of the car.I think Its common knowledge by now,and said lots of times,that before the physical removal of the dpf this has to be deleted first through reprogramming.

Procedure took around 90 minutes and it was done online with the Austrian company.They did also, to my instructions, a software tuning of the engine and upgrade the hp and torque.

Hp has gone fron 272 to 304.I did not want to exceed any limits and go further in power as I think this is not the best for any engine.
Torque however is increased from 640 to 720!That is something!!
You can feel the difference in power and torque. Is more evenly destributed and lasts longer.

After this was done I went back to the exhaust people that I mention in my previous posts.Now that the dpf is deleted I can have it removed too.Unlike in UK,here in Greece when you go for MOT they do not check if dpf is there or not.Since this is an option,why destroy a perfectly well dpf and not save it for future use.

In the case of removal however, the sensors that are fitted on the filter have to be fitted in some way on the tubing that takes the place of the dpf.
I was expecting more regarding the sound of the new exhaust.It got a little more deeper mostly noticable in higher revs but not as good as I wanted.

Economy does not look to be improved,although I was told otherwise from the tuning people.Removing the dpf lets the engine run/breath more freely and only from that, consumption should had improved.

Exhaust fumes are more tense and leaving the engine run idle in my garage is not an option any more.

All this for a little more sound from your exhaust??? Just buy the petrol v8. It'll be cheaper! I'm not Fat. RRS TDV6 HST.

Well is not just little sound.V8 engines can produce,if done right,really deep nice sound which is not there with the stock system.Its a matter of taste really.
But although this started as an exhaust modification,the main reason I had continued with it after my first unsuccessful attempt, is to get rid of the DPF.Also together with deleting DPF,I tune the engine which that also was in my plans.

oops

About 3 months after getting rid the dpf and to my surprise I have to say that petrol consumption had gone up.
I was not expecting that really.It went from 11 litres/100km to 12.5l
Reading stories about dpf removals,not only LR's but in all cars, they all talked about improvement in consumption.
So most likely the tuning I done to the engine when I did the removal,caused the increase?Again I do not recall reading about complains for increase in petrol consumption after a tune.At least the dpf removal should had compensate to the total consumption
What do you thing?

The problem with doing a remap/ tune is that you then start to use all the additional power/ torque and drive the car harder, hence the fuel consumption increase. 2020 Pangea Green 1st Edition D240 New Defender 110 is here and loving it
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2015MY Corris Grey SDv6 HSE Dynamic, the best car I have ever owned, totally reliable only a cou0le of rattles in 3 years, now no longer in my care
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bazz6666 wrote:

About 3 months after getting rid the dpf and to my surprise I have to say that petrol consumption had gone up.
I was not expecting that really.It went from 11 litres/100km to 12.5l
Reading stories about dpf removals,not only LR's but in all cars, they all talked about improvement in consumption.
So most likely the tuning I done to the engine when I did the removal,caused the increase?Again I do not recall reading about complains for increase in petrol consumption after a tune.At least the dpf removal should had compensate to the total consumption
What do you thing?

You keep saying "petrol" rather than diesel - I hope this is just an error

A new update regarding my dpf removal.

Last 7 months since I had remooved it,I only had problems that might be related to that.
First it was snapped manifold screw in one side,and change of seal,and tightening of the screws on the other manifold side.It looks like to much pressure there.

Now I have an issue with to much exhaust gases.To the extend that my car bumber surface and further up,is cover in black smoke.This issue was not from the begining of the remooval.My car is white by the way.

On the same time that the extra gases appeared,I have a strange noise coming from the turbo

Anyone has an idea what might be happening?

My advice: don't p*ss about with things like this and keep it standard. Complex machines that have been built by expert engineers for a reason
Ditch your mods and put it back to stock  Visitor from fullfatrr.com
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bazz6666 wrote:

A new update regarding my dpf removal.

Last 7 months since I had remooved it,I only had problems that might be related to that.
First it was snapped manifold screw in one side,and change of seal,and tightening of the screws on the other manifold side.It looks like to much pressure there.

Now I have an issue with to much exhaust gases.To the extend that my car bumber surface and further up,is cover in black smoke.This issue was not from the begining of the remooval.My car is white by the way.

On the same time that the extra gases appeared,I have a strange noise coming from the turbo

Anyone has an idea what might be happening?

Sounds like one (or both) of your turbos could have had it.

What sort of noise is it? A "wooo"? Is it down on power? Visiting from DISCO3.CO.UK
2006 Discovery 3 TDV6 Auto HSE Zambezi Silver

Have you had the dpf written out of the ecu? If not, it could be raising the engine temperature which is what you do with a dpf to clean it out.

Black smoke may be unrelated possibly, you just have a split in the intercooler or its pipe? Bodsys Brake Bible
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Thank you for your answers

Yes Bosby I had reprogram the ecu like i mentioned in my 20th of January post.Otherwise I would had had all sorts of warning lights

Dr Rob,yes I think you are right!That is what my mechanic kept saying prior the removal.But the thing is that many have done it,and there are threads here that only good things are said about it.
@Lost of words
Yes it sounds like a woo,and its also down on power.

How dangerous is to drive around like that? I will take in tomorrow,but I have to travel 150 miles today