DPF in latest Pajero

[JoshF]

Did I read somewhere that Toyota on the new 2.8 which also have a closed DPF as is required under new regulations is now going to get a force burn switch on the dashboard to help minimise the issues they have been betting on the tuna, prado and hilux??

[Merts]

For what it's worth, I've put 46k kms on my MQ Triton and the DPF has just done its thing with zero issues. There have been times when for a week or two the only driving was very short trips (as in between 3 and 10km around town) and the DPF light has never come on. The same sort of driving in my NS Pajero would always result in the light coming on and having to go for an otherwise unnecessary 20 minute drive to let it regenerate the DPF.

[sam.cath]

Dick01 you mention about an ECU remap & new exhaust being a good idea- is it legal to remove the DPF on the exhaust by replacing it, or is the expectation that if a new exhaust is required then the DPF with be reinstalled too??

Cheers,
Sam

[Dicko1]

Dick01 you mention about an ECU remap & new exhaust being a good idea- is it legal to remove the DPF on the exhaust by replacing it, or is the expectation that if a new exhaust is required then the DPF with be reinstalled too??

Cheers,
Sam

About as legal as blocking your egr, putting on large tyres, having a light bar on top of your bull bar, using spaces on wheels, altering your exhaust, having dark tinted windows etc.etc. My mate bought an NS...first thing to go was the dpf pipe and a couple of sensors installed...runs beautifully for the 30,000+ kilometers. Never had a limp light and plenty of ecu remap places openly admit to blocking the egr.



This for a dpf delete pipe..."for racing purposes only"

https://chiptuning.com.au/products-page/mitsubishi-dpf-delete-pipe/

and for ecu remap....https://chiptuning.com.au/dpf-removal-service/





Naturally the Pajero class at Bathurst sees a lot of Pajeros with this mod!!

[sharkcaver]

is it legal to remove the DPF on the exhaust by replacing it, or is the expectation that if a new exhaust is required then the DPF with be reinstalled too??

Cheers,
Sam

Modifying or removing any emissions control systems is illegal. Even an EGR block. That said, how many do it and do not have to face the music? When dicko mentions an exhaust replacement, he means replacing with one without a dpf, therefore illegal. Not much point replacing the exhaust and re-inserting a dpf, which was the reason for the exhaust change in the first place.

And Spot01 has it correct. Active DPF in the NS, changed to passive in the early NT. Mid NT to MY16 NX had no dpf and now we are back to a dpf again from the MY17. Whether this new one is active or passive, I don't know.

It took some time before the NS dpf issues started raising its ugly head. I've heard a few stories on the passive NT dpf now as well. For all claiming the MY17 onwards dpf issues are sorted, I suggest you watch this space.

A dpf is essentially an air filter. It collects non gaseous particles (soot - which is solid). Adblue is a catalyst that converts Nox (a gas) into water/nitrogen. By running leaner mixtures, less soot is produced but Nox is increased. Therefore why the addition of adblue. They are both emission control devices, but act on different types of emissions, one solid, one gaseous.

[nj swb]

I've heard a few stories on the passive NT dpf now as well.

What should I be looking out for?

[sam.cath]

Thanks for the replies guys.
Appreciate learning more about this. All sounds quite grey with latest Paj's with DPF's.

Look forward to hearing what we need to look out for on our NT with a passive DPF too as per
nj swb.

Cheers,
Sam

[sharkcaver]

What should I be looking out for?

No idea myself. There has been a couple of reports of NS like symptoms on the NT here on the forum and I have been asked privately by a couple of non forum members who were having issues with NT DPF's. I'm not on top of it, as I don't have a dpf, therefore didn't put a lot of effort into understanding the issues or resolution. I just mention I have heard of NT dpf issues, so I dont think the passive version is the magic bullet. All being equal, there is far, far less evidence of NT dpf issues compared to the auto NS.

[sam.cath]

Cheers sharkcaver!

[Mundy55]

.....I now have a Ford ranger and if I do get dpf issues I'll just have it deleted. Off road use only, of course...

There are issues with the Ranger DPF, but not related to failure to burn. The problem is its propensity to collect grass etc and then ignite when the burn happens. There is a recall to correct this but there is then another problem. My son recently bought a Ranger and had underbody protection added. Trouble is, the protection Ford adds is so bulky it prevents the underbody protection from fitting.

[s311_bvm]

I thinks it’s fair to call the NX +Oct 16 builds, active DPF equipped. I have a 2017 NX and love it. I have had no problems with the DPF and generally speaking do not know that it exists. We do short and long trips in the Paj as it’s our only car. The only times I have known the DPF is there is when I have driven into the garage and closed the door behind me and smelt a burning smell and heard the DPF cooling down(contracting) as must have been in the middle of an active burn when switched off.

As we know there is no legal way of avoiding a DPF in +16 (Euro5/6) diesel equipped cars from any manufacturer. I like to justify the DPF existing by thinking just perhaps it will avoid another family member from getting cancer. The exhaust is noticeably cleaner and less smelly than other family member Pajero’s (NS and NW), and other diesel vehicles in the family.

I am very aware of the NS Pajero issues as the family member who had a NS had frequent failures, and had the EGR system and inlet manifold replaced under warranty, and on another occasion the manifold was acid cleaned. The NS was sold early to get rid of the frequent issues.

As we are approaching 2 years since NXs became available with DPFs, and as the 4N15 based Pajero Sport and Tritons also have DPFs, based on the lack of negative information I think it’s fair to say Mitsubishi has learnt something as they are definitely better than the NS days, and better than what Toyota is seeing with the 2.8 in Hilux, Prado and fortuner.

Back to my Paj, as I said I am happy with the DPF to date. My fuel consumption is higher than what I think it should be but I don’t think the DPF is causing that.

[garfield]

I have a NX 11/16 build, currently no issues re the DPF. 16000 km mainly highway use, I agree with other comments re fuel use, ( My fuel consumption is higher than what I think it should be.)
its fitted with catch can and egr lead.