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Regarding removal of the DPF

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  • pinkteapot
    pinkteapot Posts: 8,044 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Photogenic
    Any evidence that the DPF failing is "the most common fault" on diesel cars?
  • Jakg
    Jakg Posts: 2,267 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    samba wrote: »
    Whether it passes the smoke test or not is irrelevant - from 1st April any vehicle originally fitted with a catalytic converter (or dpf) which has subsequently been removed is an mot failure.
    Only if it's subject to a fully catalytic test, which diesels aren't.
    Nothing I say represents any past, present or future employer.
  • jwruk
    jwruk Posts: 205 Forumite
    citykid5 wrote: »
    my son recently removed his dpf from his leon fr170 tdi.simply took the dpf section of the exhauast off,took it to a local car mods/exhaust tyre place.they charged him £30 to cut the block out of the silencer housing,then rewelded it.he put it back on,dpf warning light disapeared,since he's noticed the car is a lot more powerfull and about a 10% improvement in mpg.he's very pleased whith,and no need for a remap?

    Out of curiosity, did his insurance company class this as a modification and put an increase on his premium?
  • Trebor16
    Trebor16 Posts: 3,061 Forumite
    samba wrote: »
    Whether it passes the smoke test or not is irrelevant - from 1st April any vehicle originally fitted with a catalytic converter (or dpf) which has subsequently been removed is an mot failure.

    Can you provide the source for the info about DPF removal please?
    "You should know not to believe everything in media & polls by now !"


    John539 2-12-14 Post 15030
  • citykid5
    citykid5 Posts: 821 Forumite
    jwruk wrote: »
    Out of curiosity, did his insurance company class this as a modification and put an increase on his premium?
    no idea,havn't asked
  • Premier_2
    Premier_2 Posts: 15,141 Forumite
    10,000 Posts Combo Breaker
    citykid5 wrote: »
    no idea,havn't asked

    I bet he hasn't either especially since he claims it "is a lot more powerful" which it probably will be since he has had a ruddy big restriction removed from his exhaust ;)
    "Now to trolling as a concept. .... Personally, I've always found it a little sad that people choose to spend such a large proportion of their lives in this way but they do, and we have to deal with it." - MSE Forum Manager 6th July 2010
  • Destination_..._?
    Destination_..._? Posts: 99 Forumite
    @ pinkteapot .

    Yes I believe it is a common problem that affects diesel cars made by most manufactures .
    You can blame the driver habits for causing this and that would be correct , but then how many of them knew or even heard about the DPF very view from the evidence we can now see.
  • Jakg
    Jakg Posts: 2,267 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    Trebor16 wrote: »
    Can you provide the source for the info about DPF removal please?

    The MOT manual doesn't mention the words "DPF" at all, and as said you can only fail for not having a cat if a fully catalyst emissions test is performed, which it's not on a diesel.

    http://www.transportoffice.gov.uk/crt/doitonline/bl/mottestingmanualsandguides/mottestingmanualsandguides.htm
    Nothing I say represents any past, present or future employer.
  • Premier_2
    Premier_2 Posts: 15,141 Forumite
    10,000 Posts Combo Breaker
    Trebor16 wrote: »
    The MOT test for diesel emissions is a smoke test and it is only measuring the amount of smoke emitted and nothing else...

    What do you think smoke is if not particulate matter suspended in air/other gases?

    What do you think the purpose of a diesel particulate filter might be in this regard?
    "Now to trolling as a concept. .... Personally, I've always found it a little sad that people choose to spend such a large proportion of their lives in this way but they do, and we have to deal with it." - MSE Forum Manager 6th July 2010
  • Notmyrealname
    Notmyrealname Posts: 4,003 Forumite
    Destination_..._? wrote: »
    You can have your DPF removed.
    There are companies who can programme your ECU and offer and perform A REMAP .
    Regarding the MOT ! I believe they can refit the pipe and the DPF and afterwards remove it again .

    And as soon as you get pulled by VOSA at one of their roadside checks and they do an emissions check it'll fail.
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