Passat 170, BMR engine. DPF & EGR delete?

**jtonthebike** · 10-11-2016,01:04 PM

Hi.

After a fair bit of reading and learning the dpf on my passat has just about reached max capacity for 'carbon mass', I'm considering a trip to Avon Tuning to have the dpf guts removed and the egr blanked off followed by the relevant ecu update at stage 1.

Has anyone had their cars dpf guts removed + egr blanked off by Avon Tuning? If so, what do you think to them as a company? Has the work been successful without any strange ecu or dpf lights / further issues?

I want reliability and a reduction in potential issues further down the line and Bristol is a couple of hours away from me, so any feedback on their workmanship and quality would be very much appreciated.

Regards, Jonathan

**zollaf** · 10-11-2016,01:26 PM

what age is your car ?

**jtonthebike** · 10-11-2016,01:46 PM

Hi.

2008.

**zollaf** · 10-11-2016,01:50 PM

have you looked into the legalities of removing the dpf and egr ?

**jtonthebike** · 10-11-2016,01:50 PM

Yes. I wouldn't have considered it an option without any research.

**Crasher** · 10-11-2016,02:16 PM

Removing the EGR is defiantly illegal and I am not 100% sure about the DPF even though it is a 2008. Anyway, it's environmentally irresponsible...

**jtonthebike** · 10-11-2016,03:23 PM

Hi Crasher,

I understand the environmental ramifications of my proposals. Currently, my diesel vehicle produces a volume of white smoke when cold, part of the contents in this gaseous discharge is unburnt diesel, which is classified as "worse than asbestos" by the WHO. (this issue relates to the cam timing which Avon Tuning will look at (if they have the car).

In (theoretically) blanking off the EGR, which *may* (or may not) lead to an increase in NOx emissions, on a vehicle which is rarely driven, where I and my family regularly commute by bicycle or walking, where we use public transport, where we buy our household energy from only renewable resources is a 'risk' I am willing to take as looking at the bigger picture, our contribution to 'green' technologies and energies is significantly greater than the average Joe.

I have not seen legislation / documentation to specifically advise that bypassing the EGR is illegal. Could you please cite your claim as I'd like to better understand any gaps in my knowledge?

As I understand it, current legislation is that the DPF must appear to be present and fitted during an MOT test and that the 'smoke test' must also pass. Diesel vehicles, at the time of writing, are not subjected to the same stringent rules of a typical petrol engine, which is a bit of a shame really as there's hundreds of vehicles (in my area) spewing out black smoke that simply carry on, regardless of any environmental impact or legislation.

I think it's also worth noting that should I choose to have this work carried out and there's an improvement in fuel economy, the relationship between possible increases in NOx gasses and relative fuel consumption would be quite interesting.

**Gazwould** · 10-11-2016,03:26 PM

Go for it , de- strangle the BMR , heard good things about Avon Tuning .

**Crasher** · 10-11-2016,06:45 PM

Originally Posted by jtonthebike

I have not seen legislation / documentation to specifically advise that bypassing the EGR is illegal. Could you please cite your claim as I'd like to better understand any gaps in my knowledge.

It is under the Road Vehicles (Construction and Use) Regulation 61 A, it not an MOT failure, it is very boring legislation that I tried to read once but lost the will to live...

These are interesting

Don’t Block or Remove the EGR Valve, It’s Saving You Money | Tuner University

BBC highlight illegal DPF removals

DPF removal: the facts - Telegraph

MOT test fail for DPF removal | Auto Express

Government investigates DPF removal ahead of crackdown

https://www.gov.uk/government/upload...s-guidance.pdf

New rules for MOT to test for diesel particulate filter - Press releases - GOV.UK

Is it illegal to remove or disable your EGR valve? | Hypermiling | Fuel saving Tips | Industry News | Forum

**zollaf** · 10-11-2016,07:11 PM

due to the amount of dpfs that have had the insides removed so they can still pass an mot, there will soon be a new test in the mot to check for the correct operation of the dpf. its easy to tell, if the insides of the tailpipe are clean then its got a working dpf. if a finger comes out covered in soot then its not. lots of people will be forced to fork out a lot of money to get their cars mot'd, and all the garages that say its fine will all of a sudden stop endorsing it. vosa is already stopping any mot test centre from removing dpf's.