Soot from exhaust when revving the 2.0 TDI Audi engine - normal?

[Flakmunky]

Having owned a Golf MkV (2.0 TDI 140) and Leon Mk2 (2.0TFSI DSG - but almost bought the 170 bhp TDI) and being an active member of forums for those vehicles, the 140 bhp engine as found in either of those vehicles does not have the DPF, whereas the 170 bhp version does. The 170 bhp version is not just a 140 bhp engine with an 'official' remap; it has uprated internals as well... and has the DPF.

With my 2.0TDI 140bhp I have never seen the DPF warning light, either when driving or at ignition POST.

The link posted by sclamb says nothing about the power output of the new engine, just about a "new 2.0 TDI" engine...

What it does say is:

At this time, eighteen vehicle versions with TDI engines in the Audi range ... fully comply with Euro 4 standards without the need for particulate filters

It doesn't say that all 2.0TDI engines have a DPF...

And as for no smoke when booting it - try knocking down a few cogs and booting it at night with a car behind you. I guarantee you will see smoke in your rearview mirror!

[sclamb]

Thank you for the confirmation. I wasn't meaning to imply that you did not know the facts, so my apologies if you thought I was questioning your knowledge of these things.

I guess my trip up the road to regenerate the DPF that I do not have could be classed as a wasted journey

I hope my ChippedUK fast road remap is not unduly stressing things. I was told by them that if anything their remap causes less stress.

[Flakmunky]

I didn't read anything in to your post, so don't worry. I was just letting you know what I have based my assertions on.

Try booting your car at night like I suggest! Chances are in daylight you don't notice it so much...

[sclamb]

Thanks

I shall be out tonight gunning it using the flappy paddles and looking for clouds

[toff]

I hope my ChippedUK fast road remap is not unduly stressing things. I was told by them that if anything their remap causes less stress.

Less stress!! Pah!

You can't develop more power AND slightly increase fuel economy AND reduce stress on the engine!!

Remaps do put more strain on the engine and turbo. The reason Audi don't give you the extra power and fuel economy in the first place is for longevity - they want the engine to last and remain reliable as long as possible.

Audi also have to ensure that the same engine can be shipped all-over the world and can cope with the greatly varying grades of fuel in each country.
The re-mappers in the UK can remove some of this safety margin in favour of some more performance (as we enjoy a fairly stable and reasonable quality of fuel in this country).

Anyhow, the moral of the story is, YOU ARE reducing the life of your engine by having a remap, but so long as you drive it sensibly most of the time and you change the oil more regularly than Audi recommend (i.e. every 10k with something decent like Castrol Edge) then you will minimise the impact of the remap.

Of course, if you are only keeping the car for 3 years.. happy days! (it'll be the 3rd, 4th or 5th owners problem!)

I intend to keep my car for years, so I now drive like a granddad (unless I'm being followed by a psychopath! )

Al.

[urbanaspect]

Lot of people b1tch about the DPF,in fact Audi produced a marketing leaflet attempting to clear things up (pun intended)

I've had mine for 8 months / 9000 miles, it's had 1 service and has 23k on the clock and I've NEVER seen my warning light. I mainly drive 10miles to and from work 5 days.

It may not be the perfect solution but it's not a concern for me. Incidentally does it make a difference to road tax? My renewal is £160 I think.

(Check sig for spec)

[sclamb]

Less stress!! Pah!

You can't develop more power AND slightly increase fuel economy AND reduce stress on the engine!!

Remaps do put more strain on the engine and turbo. The reason Audi don't give you the extra power and fuel economy in the first place is for longevity - they want the engine to last and remain reliable as long as possible.

Audi also have to ensure that the same engine can be shipped all-over the world and can cope with the greatly varying grades of fuel in each country.
The re-mappers in the UK can remove some of this safety margin in favour of some more performance (as we enjoy a fairly stable and reasonable quality of fuel in this country).

Anyhow, the moral of the story is, YOU ARE reducing the life of your engine by having a remap, but so long as you drive it sensibly most of the time and you change the oil more regularly than Audi recommend (i.e. every 10k with something decent like Castrol Edge) then you will minimise the impact of the remap.

Of course, if you are only keeping the car for 3 years.. happy days! (it'll be the 3rd, 4th or 5th owners problem!)

I intend to keep my car for years, so I now drive like a granddad (unless I'm being followed by a psychopath! )

Al.

All makes sense. I thought that some components might be less stressed, such as when I accelerate the auto box does not drop down a couple of cogs like it used to because I have the power to accelerate without having to push the pedal far enough to reach the kick-down spot. I assumed the gearbox may be less stressed.

I don't drive like a maniac anyway and only use the additional power for overtaking. Most of the time I drive quite normally and conservatively.

I saw the thread about your maniac pursuer - scary

[Alan02]

Hi,you will get a warning lamp(as shown previously) if the DPF needs regenerating.And as you have done,you need to drive it at a constant rpm for a while to get some heat into the DPF to burn off the soot.There are pressure sensors on the DPF before and after to monitor when its getting blocked.If you dont have the warning light on dash,you wont have a DPF.So,i would expect you to get some soot if you only do 1 mile return each day,not good for your engine!!!

[sclamb]

I don't think I have the DPF as I cannot see warning light for it. I see you are in Cramlington. I am sure it was there that I worked on a project for a wallpaper manufacturer.

[toff]

I assumed the gearbox may be less stressed.

I saw the thread about your maniac pursuer - scary

Well your car is even less likely to suffer the most common mechanical failure due to re-mapping! (a burnt-out clutch).

Your auto box has a torque converter instead of a clutch (it's like a turbine that's propelled by fluid). This actually limits the amount of torque that can be put through to the transmission, so it is in some way protected from the additional peak power the engine produces.

It's also a good reason to buy a 2nd-hand auto.. the transmission is less likely to have been thrashed compared to an manual.

I haven't noticed my car changing down gear less - but I will take notice from now on.


Yes the psycho peruser was a very scary incident and it was a very icy night. Thank you Quattro, thank you Motech (where where you common sense?)

Al.