One of my riding mates has a Mitsubishi Triton ute to tow his caravan.
He has done many mods to it whereas my 2012 Nissan Navara ute is 100% stock bar a K&N stock airbox air cleaner element.
Just last week I was looking into a plug and play unit from Chip Tuning to switch off the EGR system thru' the ECM
( SOUND FAMILIAR FELLOW HARLEY DUDES ??)
Module on the way at $129 posted and delivered
Why ? It is a 2.5 diesel ill handling lump of course , so no need or point in "go faster".
It will give a cleaner response in the exhaust smoke output under certain circumstances , and keep the inlet manifolds and system cleaner.
Better fuel consumption to boot and quicker Turbo spool up they reckon.
Whoooah ! VW prices my goodness !
This "Nissan Common rail Diesel EGR OFF Module" is as said $129 delivered.
I probably shoulda fitted it 88,000 K's or 7 years ago FFsake !
Will post "how it goes" , as the only mod this vehicle ever got was the K&N stock replacement air filter and DIY 5,000 K oil changes.
This model is "older tech" than the D40 and has no DPF , I researched that from new and stayed away from DPF as long and far as I could !
Many years ago I was an MOT tester and "Nominated inspector" in the UK annual MOT system.
Smoke testing for diesels came in there probably 1990 as part of the MOT on any diesel vehicle, so I was acutely aware of potential problems.
6 month on update.
I did buy and fit "Chip tuning" EGR off module. Had to order specifically to the manufacturer/model/year/engine
Fairly simple "plug and play" no mechanical intervention at all required. No EGR block off plates or similar.
Thought I may 'hafta" go down that road , but so far not required
Car runs just as well as before but NO black smoke puff on acceleration. The Mrs was well iffy about that "must have been my servicing"..
Indeed the turbo probably spools up a wee tad quicker , not sure if that's a Placebo but it seems/feels so. Fuel use same or slightly better.
In truth all I was trying to do was stop the "black puff" that was becoming chronic.
Now I see others on my morning commute ,black puffing Billies many of them. Tritons the worst , some Hiluxes too !
A "mate of a mate" , baby boomer grey nomad , bought a brand spankers top of the line Triton Turbo diesel ute to tow his new you beat caravan round Oz.
Started giving those kinda problems you mentioned in SA during the rip home to WA
He had quote "had it chipped" ( don't know which method !) , he took the "chip" off and fronted up at the Mitsubishi dealer pleading ignorance.
First plug up to the diagnostic he is asked ' Is / was this chipped ?" He says " what's that etc etc " feigning ignorance as you would.
Service manager says " it has been , and it was disconnected yesterday..." End result NO WARRANTY !
He limps home to WA towing his van , then once home immediately trades it in to the Mitsubishi dealer in Bunbury 250 K's south..
May be an urban myth of course , but it "sounded" legit.
My Navara is a 2012 so none of that worry for me ( warranty worry that is !)