What does EGR delete actually do?

[grober]

I see two arguments here for an EGR delete.
One to correct inadequate manufacturer emissions technology with a design life shorter than the engine .
Two as part of a package to increase engine power and driveability.

The consequences are certainly greater engine efficiency from standard [ decreased CO2] but almost certainly at the expense of NOx emissions. So while I have sympathy with the first I am not so sure about the second if its simply an increase in power you are after.
If your car is used mainly in an urban environment you may be contributing to the detriment of the health of your fellow citizens by inceasing the NOx emissions of your vehicle. The car won't fail any test as NOx is not yet the subject of MOT checks but the removal of any emissions control devices from the engine will have consequences to the local environment in which it is used.

 

[whitenemesis]

Removal of any emissions control devices renders the vehicle illegal for road use and technically uninsurable.

Of course there will be no practical repercussions in day-to-day use but one leaves the door open to various consequences should the vehicle be involved in an RTC and the police/insurers are involved.

It's but a matter of time before these devices all become testable at MoT time...

 

[jacksona]

For me, it's more about eliminating something that will coke up & potentially go expensively wrong, and will also reduce the crap in the engine.

I'm tempted by the DPF delete as well...

 

[grober]

Diesel fumes more damaging to health than petrol engines | UK news | The Guardian
Removing your EGR and or DPF has consequences. At the moment its a matter of personal conscience, but as whitenemesis has hinted at - that may change in the future.

 

[KeithJG]

Diesel fumes more damaging to health than petrol engines

It is the same old story......just like the coming referendum!

Scaremongering by the bo peeps.......lol

I could say because i drive fast i use less time on the road covering a distance so my engine is being used less than someone who drives slower???....it is all bo££ocks

Ok, so breathing in exhaust fumes has always been bad but one thing that is never ever mentioned is that Diesel engines probably only use half the fuel a Petrol engine does.

So overall engine for engine Petrols are worse as they burn twice as much fuel to cover the same distance?

 

[grober]

The article quoted actually explained why sucessive European governments ,have erroneously as it appears now, chosen diesel as the " clean fuel" because its inherent thermal efficiency would reduce CO2 emissions. Unfortunately in the process, they seemingly ignored the diesels propensity to produce particulates and high NOx which have a deliterious contribution to the health of individuals with respiratory difficulties- the old with lung disease the very young with asthma particularly in urban environments- estimated at 30,000 extra deaths per year in the UK. Having breathing difficulties is a particulary distressing medical condition as any quick perusal of kids suffering from asthma on youtube will confirm.

 

[KeithJG]

The article quoted actually explained why sucessive European governments ,have erroneously as it appears now, chosen diesel as the " clean fuel" because its inherent thermal efficiency would reduce CO2 emissions. Unfortunately in the process, they seemingly ignored the diesels propensity to produce particulates and high NOx which have a deliterious contribution to the health of individuals with respiratory difficulties- the old with lung disease the very young with asthma particularly in urban environments- estimated at 30,000 extra deaths per year in the UK. Having breathing difficulties is a particulary distressing medical condition as any quick perusal of kids suffering from asthma on youtube will confirm.

The diesel engine has been used since around 1910 in ships, heavy lorries, and buses in fact any heavy duty commercial vehicle. Now the engine is more sophisticated in cars since the 1970's so what is different now in 2016.

The difference is now we know how many have died instead of not knowing?

Nothing will change as too much is at stake to change it at collosal expense.

You will probably find that newspapers get paid by those wanting to scaremongering so that prices can increase for diesel cars and fuel used by them.

The whole world is corrupted by the greed for money.

As I said the Bo Peeps have to have their say.

 

[ALFAitalia]

You can delete it on the ECU so it does not function....if you just use a blanking plate you will get a fault light on the dash. You could in theory remove it completely and blank it off.....but that's an instant MOT failure if spotted not to mention a £1000 fine if spotted whilst on the road. But then so is a non functioning EGR but no one is likely to spot it's mapped out. In fact all factory fitted emissions equipment must be present and functioning to be on the road.....but I've never heard of any prosecutions for that not being the case.

 

[mersum1es]

There has been scary tales about checking whole ATF system is functional in MOT, but so far we not there yet . Clear modification of course will cause action, but when removed from program there in not (yet) any possibilities to say whether or not your system is functional (probably at some day they will - but again, its all about programming and what system sends to OBD... mod illegal definately, but possible). Of course your hardware must be tight so there is no leak, and blanking plate will help there, only must be keep in mind that plate is put at right place. For example OM642 needs a pressure sensor reading which could be also prevented to read right pressure if plate is put at wrong place. Never done that but what I have read on forums.

 

[markjay]

Just wondering if any of the Diesel MB owners who had their car's EGR deleted, also signed-up for the MB compensation claim for having been misled by MB about their car's emissions......?

 

[Swotty]

I had a software EGR delete on my 2009 Citroen C6 2.7Hdi biturbo - the engine is shared with Peugeot and Jaguar. As others have said, it's an unplug each EGR and software update to tell the engine brain there are no more EGRs.

Had a performance upgrade done at the same time, and the performance and economy are both significantly improved, but can't say if the EGR delete would have been smoother on its own. It's a very popular mod among the C6 fraternity, who do report smoother engines and better starting.

Noone has reported their cars failing emissions testing but perhaps - as already said - diesels are exempt. I didn't know that.

 

[ALFAitalia]

Diesels are certainly not excempt from emissions testing...but as yet they don't measure Nox....which is what EGRs are there to reduce.

 

[markjay]

EGR deleted... DPF gutting.... AdBlue delete... straight pipes replacing the cat...

Forget ULEZ. I think that this is a case for bringing forward a complete ban on all cars that are not zero-exhaust-emissions