I'm sure i've seen something similar saying that the kit doesn't need to be there if the car isn't subject to the "full" test, but as the new MOT stuff is on every car based forum i use i haven't got a damn clue where i read it!
VAG 2.0 TDI 170 DPF Removal
- Thread starter s0ck
- Start date
Hasn't it always been the case that there must visually be a catalyst though? It's the thing no one actually checks for because it's near impossible to prove without removing it and visually inspecting inside it.
That's an hour of wasted labour right there
That's an hour of wasted labour right there
In that case those who have opted to have the guts of the DPF ripped out should be ok?
Soldato
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Most people have the downpipe fitted though...
Associate
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i have downpipe fitted and my original dpf here , and its been mapped accordingly
Most DPF removals consist of removing the element from inside the cannister so on the outside the system would look un-modified and wouldnt fail the visual inspection side of the test some cars also allow you to switch off the DPF system in the ECU as the same ECU may be used for models with and without a DPF. If you have a car that has had the pipe replaced then tyou may be able to argue that the system was a optional extra and wasnt fitted to the vehicle, I doubt any tester would fail it for that as as a whole mechanics hate the system more then drivers do and one less car fitted with that nonsense is better for us all.
The entire system is a bloody nightmare and I fully understand anyone who wishes to ditch it its a expensive disaster of a emission control add-on. Combined with a DMF most modern diesel cars are ridiculously expensive repair bills waiting to happen and very quickly not worth buying.
The entire system is a bloody nightmare and I fully understand anyone who wishes to ditch it its a expensive disaster of a emission control add-on. Combined with a DMF most modern diesel cars are ridiculously expensive repair bills waiting to happen and very quickly not worth buying.
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Are modern petrols really that much better? DMF's, Turbos, Direct injection etc. are all becoming common place now.
![[TW]Fox](/data/man-of-honor/2009.png){kind=avatar}
Quite but it's still comparatively rare, but yea, its going the same way.
Soldato
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DMF's have been common on petrol engines for years, decades in some instances. They're just less prone to failure thanks to lower levels of vibration and torque.
DMF 's on petrols are much rarer then there diesel counterparts but its true that in the next 5 years or so just about everything will have one as they are becoming more common by the day possibly adding upto £500 onto each clutch job. Diesels are more prone to DMF issues though thanks to harsh power stroke high torque at low revs and the good old fashioned oil vapour getting everywhere and weakening the DMF dampers.
Still currently I would never by a car with a DPF and would be cautious in buying one with a DMF, diesel repair bills are currently scarily high.
Still currently I would never by a car with a DPF and would be cautious in buying one with a DMF, diesel repair bills are currently scarily high.
They are not that rare really - numerous petrol cars have DMF's and have had for years. DMF faliure is much rarer as most petrol cars dont have the same torque at the flywheel.
Caporegime
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Quite a few petrol cars have had DMF's for years now, mine has one and thats a 2001, it's already failed once.
My Leon TDI has been playing up all year with urging, loss of boost, randomly cutting out, etc. and i've spent hundreds chasing it around trying to solve it.
Dealer are absolutely useless - they don't have a clue what to do as it's not throwing fault codes very often and when it does it's something like "massive underboost" which tells them nothing.
They've managed to ascertain that when it does "urge" it's suffering from what the ECU thinks is low air flow. I've had it checked for boost leaks, i've had the turbo taken apart and cleaned, and it's not sorted it.
It went in for a new set of injectors under warranty in the summer, and that's not made any difference either.
Anyhow, this month it goes into limp-home with the DPF and emissions lights on. But all they did was set it on a regeneration cycle and hand it back to me which I fear is just a temporary fix. But at least now i'm starting to prepare myself for a £1200 bill for a new DPF.
And all in the name of "lower emissions" eh?
Dealer are absolutely useless - they don't have a clue what to do as it's not throwing fault codes very often and when it does it's something like "massive underboost" which tells them nothing.
They've managed to ascertain that when it does "urge" it's suffering from what the ECU thinks is low air flow. I've had it checked for boost leaks, i've had the turbo taken apart and cleaned, and it's not sorted it.
It went in for a new set of injectors under warranty in the summer, and that's not made any difference either.
Anyhow, this month it goes into limp-home with the DPF and emissions lights on. But all they did was set it on a regeneration cycle and hand it back to me which I fear is just a temporary fix. But at least now i'm starting to prepare myself for a £1200 bill for a new DPF.
And all in the name of "lower emissions" eh?
My Leon TDI has been playing up all year with urging, loss of boost, randomly cutting out, etc. and i've spent hundreds chasing it around trying to solve it.
Dealer are absolutely useless - they don't have a clue what to do as it's not throwing fault codes very often and when it does it's something like "massive underboost" which tells them nothing.
They've managed to ascertain that when it does "urge" it's suffering from what the ECU thinks is low air flow. I've had it checked for boost leaks, i've had the turbo taken apart and cleaned, and it's not sorted it.
It went in for a new set of injectors under warranty in the summer, and that's not made any difference either.
Anyhow, this month it goes into limp-home with the DPF and emissions lights on. But all they did was set it on a regeneration cycle and hand it back to me which I fear is just a temporary fix. But at least now i'm starting to prepare myself for a £1200 bill for a new DPF.
And all in the name of "lower emissions" eh?
Never mind, you get mpgz right?
[TW]Fox;20867996 said:
Haha, not as many as you'd think. It tends to waver alarmingly between 40 and 50MPG despite no real change in my driving style.
Plus, to be fair, a lot of half decent petrol hatches have the capability to sting for a good amount as well.
As i've said before, and I still stand by it - I don't regret buying the car, but if I could go back and do it again, i'd not get the same model. It's just not worth it.
Is there such a thing?
£1200 to replace vs £500(ish) to hollow out and remap, that's a tricky one ....
And what happens come MOT time?
If you get the original unit "emptied" (beat the honeycomb out) rather than removed it'll pass the visual inspection, and the remap/reprogram will sort out the regen cycle.