Legality of DPF delete

[Russ59]

No matter what way you look at it is a simple open and shut case that under present legislation, no part of the factory fitted emissions system can be legally removed. If you, or whoever carries out the work for you, does tamper with the system and you get caught then you'll have to be prepared to suffer the consequences (ie a hefty fine or in some cases imprisonment) Without starting a political debate IMHO, whether or not the modification or removal of any component may improve the way the vehicle runs or be better for the environment makes no difference unless Peter Garrett says so and seeing as he is no longer the Minister for the Environment there may be a chance in the future for us to " Move Forward " as soon as they work out how to get out of reverse

[kaanage]

Can you please point me to the relevant clauses in the legislation relating specifically to the emission systems? The clauses I found in the Victorian regulations on EPA compliance seemed to indicate that ANY engine modifications would be ruled as breaking the law.

Yes, there was a separate clause for the emissions systems there but the other clause stated unequivocally that

A person must not, without just cause, alter, replace or modify the engine or
the exhaust system or fuel system of any motor vehicle in a way that-

(a) departs from the manufacturer's design; or

(b) increases the rate of discharge of any of the constituent parts of the
emissions or (where applicable) defeats the intended upward discharge
or dispersion of the emissions.

This should make it just as illegal to change your air filter, fuel filter or muffler type.

Or is it that the EPA are more likely to enforce the emissions system clause?

[Russ59]

It is actually illegal, in NSW at least, to run a pod styled air filter which basically replaces the air box. Most of these installs involve removing the airbox and thus disconnecting some of the emission components going to it. A lot of people as you probably would know, hide the pod filter in the airbox to avoid detection but unfortunately it is still an illegal modification. I'm not saying that I agree with not allowing modifications to be done, it's just that there are strict rules for some things and a blind eye turned to others, this doesn't just apply to engine modifications it's a part of life.