Legality of DPF delete

[kaanage]

Looking at the ADR 80/03 summary, it seems that Euro 5 specifications will only be applied to new models as of 1st Jan 2010 and then to all models as of 1st Jan 2011.

This implies that a DPF delete on any model released before 1st Jan 2010 and bought before 1st Jan 2011 would be entirely legal, as long as the catalytic converter was retained.

Is there a flaw in my reasoning?

[hazrd]

From what you have said there mate (for some reason my PC aint opening PDFs ) it sounds like its perfectly legal to perform a DPF delete on your model

I would maybe see if you can speak with an EPA rep or something and see if they can give you a reference to confirm (that is assuming the above PDF wasnt sourced from someone with the EPA)

[Guy_H]

My Understanding is that if it was supplied from the factory, you can not remove it, as you are altering the original emission's system.

There has been lobbying (to no avail) from the Bio Diesel quarter to get an exemption & be able to remove the DPF & keep the cat so you can run their fuel.

Not helping the Bio Diesel people at all.

The fine was $12000 for a business & $10,000 for an individual if caught. Not sure what it is now.

[kaanage]

Hmmmm.

I can see how it could be interpreted in that way under this regulation but then ANY engine performance modification could be pinged in the same manner under this other regulation (in Victoria anyway).

Maybe it's one of these stupid state by state cases for enforcement

[nutttr]

There's a slight flaw in the logic. Diesels are required to have a cat converter from about 2008 or so - But the rule states that if it came from the factory with one, you can't remove it. Although it's going to be a lot harder to tell than a petrol one. I intend on getting a downpipe and these don't come with cats. The issue with your idea is that I believe the cat and DPF are one piece, aren't they? Or is the DPF a replacement for a cat? I don't remember to be honest.

I have a 2005 diesel so I have no DPF and I intend on getting a downpipe without a cat. Legality of it is an issue....

[Greg Roles]

The Cat is the first part of the DPF inside the one cannister, so removing your DPF removes the factory cat. At the moment it is becomming law is a growing number of US States to retrofit a cat to all registered diesels, and no doubt one day that will be the case here as well.

I agree with Guy, remove your DPF for the benefit, and you have to run the gauntlet with the law. Crazy really on an already economical car that is even MORE economical with the delete.

[benough]

but is fuel consumption for the EPA Greg? I imagine it's more about emissions for them. Surely a DPF delete puts out a lot more particles.

[Russ59]

The legality has been the same for years with anything fitted to a vehicle to reduce emissions. Back in the 70's even when just about every man and his dog blocked hoses with the old ball bearings to try and lean the mixture out. As others have said if you remove or modify any part of the emissions system which was factory fitted (especially on newer vehicles) and you intend to drive the vehicle on a daily basis sooner or later you will be found out. You might be able to get away with it for the first few years of ownership (from new) whilst it is not compulsory to have to undergo an annual registration inspection, but once that period passes good luck, because the fines are pretty hefty I believe

[Greg Roles]

but is fuel consumption for the EPA Greg? I imagine it's more about emissions for them. Surely a DPF delete puts out a lot more particles.

It puts out a lot more big particles you can see, all a DPF does is make them microscopic, and there is yet another report out at the moment postulating that this is actually MORE dangerous to our health; you just cough up the soot, whereas the tiny soot particles enter the bloodstream directly. But hey, you can't see it......time will tell if it's actually a good thing! I'm keeping my eye on the research!

Seems overall emissions outside particulates would drop with reduced fuel use in my opinion, but would probably even out as you'd be up it more. But yeah, all theory, and the EPA don't measure anything outside particulates for diesels.

[kaanage]

The Cat is the first part of the DPF inside the one cannister, so removing your DPF removes the factory cat.

I was wondering if it was possible to cut the back of the cannister open and remove the DPF while leaving the cat intact at the front and then replace the cannister. That would be my intention once mine clogs rather than a downpipe.
It wouldn't hurt to try IMO since the cannister is unusable at this point anyway.