DIY dpf gutting, possible?
Discussion
The ECU should be remapped to account for the lack of the DPF. If not, it may still attempt regeneration which could lead to plumes of exhaust smoke as extra fuel being injected won't be burned by a non-existent DPF.
The other theory is that with a free flowing DPF the sensor will never request a regen so no issue with the extra fuel/smoke. I have heard of someone who did that, but he also reset the ECU to say a new DPF had been fitted.
The other theory is that with a free flowing DPF the sensor will never request a regen so no issue with the extra fuel/smoke. I have heard of someone who did that, but he also reset the ECU to say a new DPF had been fitted.
Monty Python said:
If you remove the insides then the ECU will register a fault with the differential pressure sensor - it measures soot build-up by the difference in pressure before and after the filter, so this has to be removed from the ECU.
What if you stick an orifice plate in there that will create a differencial pressure?HertsBiker said:
Saw this mentioned in another thread. Is it really as simple as banging a drill through it? How does the ecu know if you've done this? Just curious.....
Remove DPF housing from car, which is often the most time consuming part.Some DPF housing need cutting open and rewelding after the filter is drilled out.
ECU will need programming to stop regen cycles and EOLYS fluid pump if fitted.
MOT should pass on a diesel as it's only a smoke test and check to see if DPF housing is still there.
A tankfull of Shell V-Power at MOT time should reduce any diesel smoke.
"Tests for diesel cars and lorries are to be tightened up to ensure vehicles have a critical exhaust filter if one had originally been fitted as standard, Roads Minister Robert Goodwill has announced.
Garages and testing stations will be required check for a diesel particulate filter (DPF) in the inspection of the exhaust system as part of the MOT test (or annual test for heavy vehicles) from February 2014.
The vehicle will automatically fail the MOT test if the filter had been fitted as standard but is found to be no longer present."
Garages and testing stations will be required check for a diesel particulate filter (DPF) in the inspection of the exhaust system as part of the MOT test (or annual test for heavy vehicles) from February 2014.
The vehicle will automatically fail the MOT test if the filter had been fitted as standard but is found to be no longer present."
Riley Blue said:
The vehicle will automatically fail the MOT test if the filter had been fitted as standard but is found to be no longer present."
Old news.Your car will still pass, as they only check the DPF housing is still fitted.
You will get a fail if a straight pipe has replaced the DPF housing.
lbc said:
Riley Blue said:
The vehicle will automatically fail the MOT test if the filter had been fitted as standard but is found to be no longer present."
Old news.Your car will still pass, as they only check the DPF housing is still fitted.
You will get a fail if a straight pipe has replaced the DPF housing.
Looks like it may be more than a visual inspection in the future.
Riley Blue said:
lbc said:
Riley Blue said:
The vehicle will automatically fail the MOT test if the filter had been fitted as standard but is found to be no longer present."
Old news.Your car will still pass, as they only check the DPF housing is still fitted.
You will get a fail if a straight pipe has replaced the DPF housing.
Looks like it may be more than a visual inspection in the future.
Engineer1 said:
I can't see what else they can do as if they have to remove it to inspect then surely the garage is opening itself up to issues if the dpf fails shortly after.
They'll just connect the car up to a diagnostic computer and check the DPF code is still there. If it's been deleted then it's obviously been removed.Riley Blue said:
Andehh said:
Monty Python said:
They'll just connect the car up to a diagnostic computer and check the DPF code is still there. If it's been deleted then it's obviously been removed.
I doubt it is really that simple.Driver101 said:
Leave it on and if it has failed, buy a new one.
If you've bought a diesel, you have to accept it has drawbacks.
Good answer.If you've bought a diesel, you have to accept it has drawbacks.
If a DPF has "failed" chances are the driver has the wrong car for their lifestyle (miles/length of journey etc)
Just buy a petrol. People will like you more
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