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Diesel Owners - Removing the Particulate Filter (DPF) will now be an MOT fail from 2014

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  • Diesel Owners - Removing the Particulate Filter (DPF) will now be an MOT fail from 2014

    De-cats on diesels (in regards to the MOT) are still ok though
    Wonder how long it will be until EGR valves become part of the MOT as well

    New rules for MOT to test for diesel particulate filter - GOV.UK

  • #2
    But how will they check? The DPF is normally just hit a few times and then emptied, it still looks like it's there.
    Originally posted by Dave
    Originally posted by Stephen Fry
    [B]"It's now very common to hear people say, 'I'm rather offended by that.' As if that gives them certain rights. It's actually nothing more... than a whine. 'I find that offensive.' It has no meaning; it has no purpose; it has no reason to be respected as a phrase. 'I am offended by that.' Well, so ****ing what."

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    • #3
      It'll just be a visual check, to check it's presence.
      If it's had the top chopped off, insides removed and re-welded the most they could do is mark the MOT with advisory about it being welded and suspect hollow (hit it with blunt instrument and listen).

      A few companies do a bypass / removal pipe though which would be an instant fail

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      • #4
        Wouldn't be a problem if they worked
        Originally posted by Dave
        Originally posted by Stephen Fry
        [B]"It's now very common to hear people say, 'I'm rather offended by that.' As if that gives them certain rights. It's actually nothing more... than a whine. 'I find that offensive.' It has no meaning; it has no purpose; it has no reason to be respected as a phrase. 'I am offended by that.' Well, so ****ing what."

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        • #5
          The problem with dpf has mainly been the salesman supplying cars with dpf to people who do short journeys and never naturally regen

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          • #6
            Was told by salesman at dealers a few weeks ago that they sent a couple to a dpf removal garage as they had to keep coming back for regens. Was said that there more hassle and trouble for people who do short journeys, and they have little use anyway.

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            • #7

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              • #8
                People say its bad etc but how many people get their petrol cars through an MOT with a de-cat and bad emissions.

                Just need to be more particular where you go and get your mots

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                • #9
                  I'll need to sort something out.
                  I still have the standard exhaust system with the cat in it, but it's on the downpipe and a complete nightmare to fit (need to drop the subframe)
                  I imagine there will be a lot of TDi's failing the MOT this year.

                  If there's any "friendly" MOT garages near me i don't know of them yet

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                  • #10
                    Ask about the local modified car owners sure you will find a place

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                    • #11
                      Just encourages more and more people to get dodgy mots, other problems probably won't be picked up either anymore,
                      Meaning cars overall less safe

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                      • #12
                        The solution to all this is simple really.

                        Instead of buying off the shelf exhaust systems, everyone will be going to proper custom exhaust shops. Get a system made up with flanges in the right places, weld flanges to the cats/dpf. Make it so it's all bolt in/bolt out stuff. 30min job to set exhaust up for MOT. 30mins again to put it back to street/race/track exhaust with noise etc.
                        |> Spec2 R33 Skyline GTS-T <|

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                        • #13
                          That's an option!
                          Mines was custom made from Turbo back so going to contact the guy and see what he thinks.
                          Standard pipes feeding to the OEM cat are 2.25" though and new system is 2.5" so hopefully not too much trouble

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                          • #14
                            thought a dpf had to be mapped out?
                            Rub-A-Dub-Dub

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                            • #15
                              Another way of making diesels even more boring
                              [CENTER]Understeer: when you hit the wall with the front of the car.
                              Oversteer: when you hit the wall with the back of the car.
                              Horsepower: how fast you hit the wall.
                              Torque: how far you take the wall with you.[/CENTER]

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