Buying a car with it's EGR and DPF removed/blanked

lawred2

Are there any legal implications? Implications for an NCT etc?

Henry Ford III

It won't pass the NCT?

lawred2

Henry Ford III wrote: »

It won't pass the NCT?

Is that a statement or a question?

The car being sold has only recently passed the NCT so either then tester was lax or the test doesn't actively check for EGR/DPFs specifically.

TheShow

Question is why would you?

ShadowHearth

I would not touch any car, with these things messed with.
Some lads I know in garages laughing: we got payed to remove these things and soon people will pay to put them back in.
Ncts will very soon clap down on this removal and these cars will be very expensive to put back
together properly.

Op, just get normal one and save yourself a few grey hairs in the future.

lawred2

TheShow wrote: »

Question is why would you?

Why would you remove them? That I can't answer. I didn't do it. Owner says it was to avoid costly issues with coked up valves and filters.

colm_mcm

TheShow wrote: »

Question is why would you?

Because both items can go wrong, and when they do it costs money.
Their removal could be to fix a symptom of another problem too.
I’m not sure many people preventively do it, I’d say more do it as a cheap fix.

tedpan

lawred2 wrote:

Why would you remove them? That I can't answer. I didn't do it. Owner says it was to avoid costly issues with coked up valves and filters.

Exactly that, they decided that the costs of replacing the dpf (upto 2k) on some cars was not worth it. They probably never nctd the car either.

colm_mcm

tedpan wrote: »

Exactly that, they decided that the costs of replacing the dpf (upto 2k) on some cars was not worth it. They probably never nctd the car either.

That’s a bit of an assumption!

tedpan

colm_mcm wrote:

That’s a bit of an assumption!

Basing that assumption on myself and lots of lads I know

tipptom

Had it done a few years ago,had NCT twice since,never been an issue.

lawred2

tipptom wrote: »

Had it done a few years ago,had NCT twice since,never been an issue.

Why did you get it done?

selectamatic

When the time comes the dpf test will be a visual look to see if there is anything remotely like a dpf still connected to the exhaust system.

Even this is going to be tricky because modern dpf systems aren't exactly located with accessibility in mind. For example on mk7 golfs the setup is wedged right up tight behind the engine.

Is the car remapped? Dpf deleted and egr blanked off are common mods to do as more power can be got from the remap.

colm_mcm

tedpan wrote: »

Basing that assumption on myself and lots of lads I know

You’re saying the recent NCT is fake?

Truckermal

selectamatic wrote: »

When the time comes the dpf test will be a visual look to see if there is anything remotely like a dpf still connected to the exhaust system.

Even this is going to be tricky because modern dpf systems aren't exactly located with accessibility in mind. For example on mk7 golfs the setup is wedged right up tight behind the engine.

Is the car remapped? Dpf deleted and egr blanked off are common mods to do as more power can be got from the remap.

This^^^^^^ is fact and not some of the waffle posted above, the car will have much more power and better MPG. I would buy one with all that work done once it was done correctly.

Bikerman2019

I know a mondeo 2l TDCI that gave DPF issues. The DPF was replaced. It happened again so was pulled out. The exhaust was removed, and the top part - the part facing the underside of the car, was cut open and DPF removed. Then it was welded up again, and refitted.


Car passed NCT twice since and you cannot see any weld. It was remapped and no longer gives any trouble. Also puts out a bit more power.

tedpan

colm_mcm wrote:

You’re saying the recent NCT is fake?

No, meant when I was a kid boy racer years ago! Now I drive a leaf

Truckermal

tedpan wrote: »

No, meant when I was a kid boy racer years ago! Now I drive a leaf

I'm not a mathematician but that don't add up as DPF's only became mainstream 11 year's ago so using the assumption they were trouble free for 4 year's that means you are only 24 ish and driving a Leaf...

TheShow

lawred2 wrote: »

Why would you remove them? That I can't answer. I didn't do it. Owner says it was to avoid costly issues with coked up valves and filters.

No. why would you consider buying.

colm_mcm

Should be pointed out that a car that’s designed to have a DPF where it’s removed is generally more harmful than one that never had one.

zilog_jones

I blanked out the EGR valve in my old 406 because it was very broken and leaking exhaust into the engine bay and cabin. AFAIK the NCT doesn't check for functionality of the EGR valve - blanking is not necessarily visible if the valve is left in place, although close inspection would show the solenoid was disconnected.

My solution to cars originally fitted with DPFs: Never buy one.

HailSatan

colm_mcm wrote: »

Should be pointed out that a car that’s designed to have a DPF where it’s removed is generally more harmful than one that never had one.

How so though?

HailSatan

zilog_jones wrote: »

AFAIK the NCT doesn't check for functionality of the EGR valve - blanking is not necessarily visible if the valve is left in place, although close inspection would show the solenoid was disconnected.

Gas isnt it. With all the world's experts on small diesel engines on hand, the EU never got around to specifying some common standard for selfchecking/reporting/testing diesel emissions equipment.

How odd. Surely it must have crossed somebodies mind along the way ;);)

_Brian

Know of a car where a stuffed dpf was removed, drilled through, refitted, remapped to account for this, and it subsequently passed NCT with very good emissions results.

Cost €250 and took 6 hours to complete.

People do it because it’s a very cheap fix to an expensive problem.

jmreire

Maybe still doable in Ireland ( at least for another while,,,) but as far as I know..it's an MOT fail in England.

HailSatan

What kind of testing do they do in UK beyond eyeballing it?

grogi

lawred2 wrote: »

Are there any legal implications? Implications for an NCT etc?

It is an illegal car on the public road. Modification like that changes the emission, and the car looses it's type approval.

Lack of enforcement does not change the above.

What's more, what does it say about the previous owner?

HailSatan

grogi wrote: »

What's more, what does it say about the previous owner?

They wanted to save the planet by making their car more efficient and reduce CO2?

It's the only emission that mattered apparently.

selectamatic

Visual test in the uk mot.

Here for the nct as long as you didn't exceed the db limit or the smoke limit (which is high) you could pass with a full straight pipe on a diesel. Dummy cats and dummy backboxes are used by some and anyone getting their dpf removed would be wise to have a dummy dpf or just have their old one hollowed out.

The morality side of things is up to the individual.

I've none of the above done currently and I'm not exactly advocating it but that said people who are so vehemently against this type of thing shouldn't get a free pass to mislead or lie about the technical aspects of this (And I'm not implying anyone on this thread has lied either) but I've seen it before both on here and on fb.

HailSatan

selectamatic wrote: »

people who are so vehemently against this type of thing shouldn't get a free pass to mislead or lie about the technical aspects of this

Well said. If they feel so strongly about it they should be making noise about changing the NCT to evolve beyond a token gesture test for "low emissions diesel"


Are individual countries allowed to go on a solo run on these things? I thought the concept of national car testing was driven by the EU? Would ireland be told to get ****ed if we started asking for real diesel emissions tests to be part of that?

Dave147

tedpan wrote:

Exactly that, they decided that the costs of replacing the dpf (upto 2k) on some cars was not worth it. They probably never nctd the car either.

I removed EGR and DPF delete on my old Audi A4 and it passed the NCT no problem whatsoever, I was advised to remove it rather than spend more money than the car was worth.