Anyone here deleted their diesel DPF?

Lopéz said:
Why the recent trend for the word "delete" when people are talking about removing parts from cars :confused:
Click to expand...
In this instance, the word delete refers to the removal of the dpf from the ECU memory. You are 'deleting' any record of it.
 
"delete" is something you do to written or printed characters. Something physical like a DPF is "removed". It's really not a difficult concept, but some people seem to struggle with it.
 
Peter450 said:
Are these not supposed to prevent harmful particulates getting into peoples lungs though......
Click to expand...

The particles come out eventually during regeneration, which of course makes the car use more fuel to do the regeneration, so you have to ask yourself is it a benefit at all overall?

Cutting them out is fine, as even if you are testing a car with a nice welded flap down the side, can you really prove the internal element isn't there? I'm sure VDSA would just say pass and advise.
 
Dogbreath said:
"delete" is something you do to written or printed characters. Something physical like a DPF is "removed". It's really not a difficult concept, but some people seem to struggle with it.
Click to expand...
Sorry you're the one struggling with the concept. You can 'remove' the dpf physically but it will still be there as far as the ECU is concerned, it just won't be able to talk to it and the car will go in to limp mode. This is why the entry in the ECU is 'deleted'. You do this with a laptop and are asked by the software if you want to 'delete' the value.

I don't see any laptops with 'remove' keys.
 
It does sound daft though...

Even if you are deleting lines of code from the ECU to take advantage of it, you still had to remove the physical part first. So it's really a DPF removal.
 
Lopéz said:
Why the recent trend for the word "delete" when people are talking about removing parts from cars :confused:
Click to expand...



Indeed, it just sounds a bit silly. I've seen it used in the context of many other car parts that obviously aren't linked to the ECU.
 
justbeats said:
Sorry you're the one struggling with the concept. You can 'remove' the dpf physically but it will still be there as far as the ECU is concerned, it just won't be able to talk to it and the car will go in to limp mode. This is why the entry in the ECU is 'deleted'. You do this with a laptop and are asked by the software if you want to 'delete' the value.

I don't see any laptops with 'remove' keys.
Click to expand...

Do you actually delete the value? Or change it to a value that specifies no DPF?

Surely if you just delete the value, you're going to get all sorts of error codes when the rest of the ECU programming is looking for a value and instead returns a null?

Anyway just off to delete some petrol from my car by deleting some miles from the distance to my house.
 
realscot said:
The particles come out eventually during regeneration, which of course makes the car use more fuel to do the regeneration, so you have to ask yourself is it a benefit at all overall?
Click to expand...

The DPF captures larger particulates (soot) that result from incomplete combustion. When it regenerates, the soot combusts completely so the emissions are totally different.
 
Malt_Vinegar said:
It does sound daft though...

Even if you are deleting lines of code from the ECU to take advantage of it, you still had to remove the physical part first. So it's really a DPF removal.
Click to expand...
Actually you don't, you can delete the value without physically removing the part.
 
Haggisman said:
Do you actually delete the value? Or change it to a value that specifies no DPF?

Surely if you just delete the value, you're going to get all sorts of error codes when the rest of the ECU programming is looking for a value and instead returns a null?

Anyway just off to delete some petrol from my car by deleting some miles from the distance to my house.
Click to expand...
You can change and delete values, depends what it is you want to get rid of, change, or substitute.

I think 'burning' petrol while 'covering' some miles is quite abit different from deleting a ECU string/value ;)
 
Last edited:
jono_astra said:
the dpf system is kinda compex really, yes you can have it deleted but as far as the mot is concern it states that it can fail if it obviously missing. How this is checked can be debatable, but the fact that all diesels with dpf fitted have near 0 emissions on the smoke test. so deleting the dpf will increase the smoke test results so its arguable that it could potentially fail because its obvious that the dpf internals are missing even if the case is in place. Plus the fact that whoever remaps and removes the dpf remain responsible for making that car illegal to go on the road as its an offence to have to dpf removed apparently.

The dpf also is a serviceable part, this is why when people say there faulty, often there not. its because the dpf fills up with soot, then when the regenerations happen, the soot is burnt off at super high temps leaving an ash deposit behind. This Ash deposit cannot be removed or cleaned out and this in effect blocks the dpf. This makes the dpf a serviceable part. Over fueling cars or poor running conditions have a dramatic effect on the life of a dpf.
Click to expand...
As long as the vehicle doesn't exceed the stated emissions requirement it doesn't matter if it is a little higher without a dpf.

Not all dpf's are serviceable.
 
Bad implementation, the filter should be a removable device that can just be exchanged and cleaned elsewhere instead of abusing the engine and turbo to burn it out :rolleyes:
 
Jakus said:
Bad implementation, the filter should be a removable device that can just be exchanged and cleaned elsewhere instead of abusing the engine and turbo to burn it out :rolleyes:
Click to expand...

Or just find better ways of reducing emissions.
 
You must log in or register to reply here.
Back
Top Bottom