Dpf & Egr Removal

[Confused]

Hi everyone 

I'm looking to get both the dpf & egr removed or deleted which ever is better,( I've got error code P2002 plus been advised by Audi specialists my egr cooler has gone & the dpf, well who needs to replace one of those) but looking for somewhere reliable to do the work, any suggestions? I can get it done  round the corner from me but just have a feeling about the company that I just dont trust them. Oh any ideas on how much it will be. 

Thanks for any and all responses 

[Magnet]

Hello Simon,

Sorry to hear of your issue, particularly since the replacement costs are likely to render that route as being uneconomical. 
I terms of deleting, I would first be taking experienced advice on this, and the potential MOT implications, before spending anything on that route. 
Let’s hope someone who has experienced views of been-there-done-that will be along to help, or if there is indeed experienced advice to just not go there. 
Kind regards,

Gareth. 

[Stevey Y]

7 hours ago, Confused said:

Hi everyone 

I'm looking to get both the dpf & egr removed or deleted which ever is better,( I've got error code P2002 plus been advised by Audi specialists my egr cooler has gone & the dpf, well who needs to replace one of those) but looking for somewhere reliable to do the work, any suggestions? I can get it done  round the corner from me but just have a feeling about the company that I just dont trust them. Oh any ideas on how much it will be. 

Thanks for any and all responses 

Hi if you get the DPF/EGR removed or deleted you will be forever getting dash warnings, no one has yet come up with a software that can delete the low pressure cooler which is I suspect the reason you are considering this route, please observe the following, if you remove the main EGR you raise both cylinder head temperatures as well as the turbo temperatures as the gas will be a lot hotter, this will also raise Nox1 emissions which the sensors in the exhaust stream will pick up hence the lights on the dash, I am pretty sure the code you have is p2002 particle filter bank one above threshold, the DPF is not itself blocked just the cooler, I have had a couple of these apart, also try and disseminate between the cooler and the main EGR which rarely gives trouble also might be worth looking at on site cleaning /mobile where they come to you and run cleaning solution through the exhaust system via the sensor hole on the cat.

Steve.

[Confused]

Thanls for the reply Stevey oh this is the forst ive heard this, only read what an improvement it makes to the cars performance and obviously no parts to go wrong. Guess I'll give some more thought. 

[Hammie1982]

Simon,

EGR & DPF Deletes have all sorts of pro's and cons.
to be honest, in all the research i have done, i cant come to a consensus on it at the moment myself.

Ive been thinking of doing the same thing on my A8 3l tdi.  Stage 2 Tune about 340bhp with a tuner i know! 
Hes not exactly sure what torque figure but its fairly impressive.
If cat is still in, you might pass the emmisions tests but not definite! 
If the EGR isnt there any more and the engine is no longer breathing its own gasses, then surely theres going to be alot less carbon buildup in the engine.
Maybe a bit dirtier smoke wise tho.
Only way to decide for yourself is to talk to the people that do it and not just a "Why should i do it", but more of a "If i do this, whats the effect?  Whats the alternatives" kinda conversation.  Im still on the fence but seriously starting to sway towards a decision!

Heres a couple of sites i have been reading thru for info
https://www.dieseldoctor.ca/blog/advantages-and-disadvantages-of-an-egr-delete

https://www.a5oc.com/threads/egr-delete-keep-dpf.179378/#:~:text=It shouldn't cause any,fuel ratios at low load.

https://forums.tdiclub.com/index.php?threads/dpf-egr-delete-worth-it.518108/

https://essextuningltd.co.uk/egr-delete-advantages

https://www.parkmuffler.com/blog/diesel-delete-kits-dpf-def-egr/

https://www.boards.ie/discussion/2056872619/dpf-egr-removal-advantages-disadvantages

https://www.audi-sport.net/xf/threads/159455/

 

I could go on giving links all day, but its fairly pointless cause anyone can google as well as i can.

Have a chat with the tuner that your considering, have a read about it and decide for yourself.

[muvon77]

On 3/15/2024 at 5:54 PM, Stevey Y said:

Hi if you get the DPF/EGR removed or deleted you will be forever getting dash warnings, no one has yet come up with a software that can delete the low pressure cooler which is I suspect the reason you are considering this route, please observe the following, if you remove the main EGR you raise both cylinder head temperatures as well as the turbo temperatures as the gas will be a lot hotter, this will also raise Nox1 emissions which the sensors in the exhaust stream will pick up hence the lights on the dash, I am pretty sure the code you have is p2002 particle filter bank one above threshold, the DPF is not itself blocked just the cooler, I have had a couple of these apart, also try and disseminate between the cooler and the main EGR which rarely gives trouble also might be worth looking at on site cleaning /mobile where they come to you and run cleaning solution through the exhaust system via the sensor hole on the cat.

Steve.

My 2016 a4 2.0 tdi is mapped up dpf removed and adblue removed and has no lights on the dash 

[muvon77]

I’ve just taken all of the silencers out too and I’ve never had a problem. The valve was still left in the exhaust tho to stop any lights and it’s a fly machine it’s gone from 150bhp to 198bhp it’s better on fuel and just drives better. I’d definitely advise mapping your car and getting rid of silencers for more exhaust gas flow and obviously map the ad blue out and gut dpf there’s only a puff of smoke on start up wen cold that’s it. Not even on full throttle. 

Edited October 4, 2024 by muvon77

[Lacey86]

Hi, what did you decide in the end? 

Edited Monday at 07:51 PM by Lacey86

[Lacey86]

On 10/4/2024 at 7:44 AM, muvon77 said:

I’ve just taken all of the silencers out too and I’ve never had a problem. The valve was still left in the exhaust tho to stop any lights and it’s a fly machine it’s gone from 150bhp to 198bhp it’s better on fuel and just drives better. I’d definitely advise mapping your car and getting rid of silencers for more exhaust gas flow and obviously map the ad blue out and gut dpf there’s only a puff of smoke on start up wen cold that’s it. Not even on full throttle. 

Hi mate. Where did you this done? 

[Lacey86]

On 10/4/2024 at 7:44 AM, muvon77 said:

I’ve just taken all of the silencers out too and I’ve never had a problem. The valve was still left in the exhaust tho to stop any lights and it’s a fly machine it’s gone from 150bhp to 198bhp it’s better on fuel and just drives better. I’d definitely advise mapping your car and getting rid of silencers for more exhaust gas flow and obviously map the ad blue out and gut dpf there’s only a puff of smoke on start up wen cold that’s it. Not even on full throttle. 

Hi mate, where did you get this done? Is it still going OK? 

[Lacey86]

On 3/15/2024 at 5:54 PM, Stevey Y said:

Hi if you get the DPF/EGR removed or deleted you will be forever getting dash warnings, no one has yet come up with a software that can delete the low pressure cooler which is I suspect the reason you are considering this route, please observe the following, if you remove the main EGR you raise both cylinder head temperatures as well as the turbo temperatures as the gas will be a lot hotter, this will also raise Nox1 emissions which the sensors in the exhaust stream will pick up hence the lights on the dash, I am pretty sure the code you have is p2002 particle filter bank one above threshold, the DPF is not itself blocked just the cooler, I have had a couple of these apart, also try and disseminate between the cooler and the main EGR which rarely gives trouble also might be worth looking at on site cleaning /mobile where they come to you and run cleaning solution through the exhaust system via the sensor hole on the cat.

Steve.

Hi Steve,

Do you have anymore info about the cleaning service to clean out the exhaust system? Do you know anyone where this has worked before? I've got the P2002 and P20E8 codes today sadly and can't beleive the repair cost. 

[muvon77]

11 hours ago, Lacey86 said:

Hi mate, where did you get this done? Is it still going OK? 

My friend did it in Northallerton at his garage and got his mate to come do the remap was about £400 all in. And it’s not a bodge job either. You’d never know. I’ve just sold the car and I never had a problem where when I had adblue etc I was always coming into problems. And if you do what I said to the exhaust it be a different car. Leaving the exhaust silencers leaves too much back pressure when mapped. (Trust me I tried every way haha) I have a video of it just revving you also get the odd “choo” off throttle. A panel filter also is no good I got better performance from a ram air cone filter and used the original air box and induction. 

[muvon77]

 

 

This is it all done. 

[Lacey86]

2 hours ago, muvon77 said:

My friend did it in Northallerton at his garage and got his mate to come do the remap was about £400 all in. And it’s not a bodge job either. You’d never know. I’ve just sold the car and I never had a problem where when I had adblue etc I was always coming into problems. And if you do what I said to the exhaust it be a different car. Leaving the exhaust silencers leaves too much back pressure when mapped. (Trust me I tried every way haha) I have a video of it just revving you also get the odd “choo” off throttle. A panel filter also is no good I got better performance from a ram air cone filter and used the original air box and induction. 

Cheers mate, did you have any issues when selling with it technically not being road legal now? Did you declare it before selling?

I'm most worry about resale value of the car. I've not modified the car in any way, no re-mapping or performance enhancements. I just use it to get from A - B and want it to be in good condition, but it is a decent car probs worth about 11k so I'm most worried I'll be ruining it. If that makes sense

[cliffcoggin]

Bear in mind that remapping might be counted as a modification as far as your insurer is concerned, particularly if the power is increased, so unless you declare the modification the policy may be invalid.