Sheefa Posted June 16, 2017 Share Posted June 16, 2017 Interesting. Guess it was only a matter of time following the recent bad press on air pollution and excessive toxic-action. Guess people will have to find "friendly" MOT testers for this too or refit DPF device. https://autotechnician.co.uk/roadworthiness-will-bolster-dpf-checks/ Greg Quote Link to comment Share on other sites More sharing options...
curious Posted June 16, 2017 Share Posted June 16, 2017 Interesting. Guess it was only a matter of time following the recent bad press on air pollution and excessive toxic-action. Guess people will have to find "friendly" MOT testers for this too or refit DPF device. https://autotechnician.co.uk/roadworthiness-will-bolster-dpf-checks/ Greg /QUOTE] Removing the CAT's on a petrol car has been going on far longer, so this won't really stop DPF removal or tampering. How many Supra's are running OEM CAT's, or even Sports CAT's that are up to specification ? Quote Link to comment Share on other sites More sharing options...
Sheefa Posted June 16, 2017 Author Share Posted June 16, 2017 Removing the CAT's on a petrol car has been going on far longer, so this won't really stop DPF removal or tampering. How many Supra's are running OEM CAT's, or even Sports CAT's that are up to specification ? /QUOTE] Yes obviously Tony. My point is you could leave the DPF there and just remove the internals so it seems ok on MOT but now they've halved the regulatory limit to catch more people out doing this it's a bit different. I agree though there will always be ways to circumvent this but I would imagine a few people will be in for a surprise first MOT time. A number of people on here have removed the DPF on their BMWs etc Quote Link to comment Share on other sites More sharing options...
curious Posted June 16, 2017 Share Posted June 16, 2017 Yes obviously Tony. My point is you could leave the DPF there and just remove the internals so it seems ok on MOT but not they've halved the regulatory limit to catch more people out doing this. /QUOTE] Hi Greg, not disagreeing with you dude that it may affect a few people [emoji106] But maybe I wasn't so clear, I was trying to say that any one who is going to have a DPF removed or altered is already going to have a friendley MOT tester in mind. This has been the case with owners who have been removing their CAT'S since the early 90's LOLL ! There maybe a few people that may struggle, but on the whole we all know a mate who knows a MOT tester. Thank God for Friendley MOT tester's ! Yes obviously Tony. My point is you could leave the DPF there and just remove the internals so it seems ok on MOT but now they've halved the regulatory limit to catch more people out doing this it's a bit different. I agree though there will always be ways to circumvent this but I would imagine a few people will be in for a surprise first MOT time. A number of people on here have removed the DPF on their BMWs etc /QUOTE] Quote Link to comment Share on other sites More sharing options...
Shane Posted June 18, 2017 Share Posted June 18, 2017 Just been through a expensive and stressful episode with the wife's latest car an Auris 2.2 d4d. Soon after she bought it kept trying to regenerate after loads of research and titting around with it I was left with a decision to buy a aftermarket dpf for around £400 which was likely not to last, or a oem part for around a grand on a car worth about 3 or to lose it completely which isn't as easy as you may think. Its certainly not like just pulling the cats off on a 90s car I ended up losing the dpf,egr and cat but the can is still there and in tact as far as a visual check is concerned, however the 5th injector had to be taken out(disabled) and a full ecu remap carried out to make it run correctly afterwards to prevent the ecu from chucking up errors because of the dpf/cat/5th inj not being there. I decided after lots of research this was the only way really but accept we are going to have to use my mate at test time. I have seriously started to wonder if all this extra crap really does anything for either the carbon footprint or promoting less pollution. On a plus its transformed the car in terms of power/torque and increased the mpg by a staggering 20%. Quote Link to comment Share on other sites More sharing options...
curious Posted June 18, 2017 Share Posted June 18, 2017 Hi Shane, sorry to hear your troubles. But you are mixing removing different systems from different eras. Removing a CAT from a 90's car or an early DPF is far different in terms of stratagy to modern vehicles. Even new petrol cars are getting harder to remove the CAT's from as the ecu emission stratagies are more complex with NOX sensors, air pumps, EGR and wide band sensors to contend with. So it's not just DPF'S that have sensor/system issues upon removal. This I know from experience as I have carried this out on numerous modern petrol and diesel vehicles from various maufacturers. You will gain in all cases better fuel economy and power as mentioned. It's also surprising how much modern petrol engines have come on with direct injection, variable cams, manifolds and high compression forced induction, all helping their mpg to improve in leaps and bounds. Almost as good as some older diesels without the DPF issues. There is talk in the industry that diesels days are numbered in the personal sector. Quote Link to comment Share on other sites More sharing options...
Shane Posted June 19, 2017 Share Posted June 19, 2017 Hi Shane, sorry to hear your troubles. But you are mixing removing different systems from different eras. Removing a CAT from a 90's car or an early DPF is far different in terms of stratagy to modern vehicles. Even new petrol cars are getting harder to remove the CAT's from as the ecu emission stratagies are more complex with NOX sensors, air pumps, EGR and wide band sensors to contend with. So it's not just DPF'S that have sensor/system issues upon removal. This I know from experience as I have carried this out on numerous modern petrol and diesel vehicles from various maufacturers. You will gain in all cases better fuel economy and power as mentioned. It's also surprising how much modern petrol engines have come on with direct injection, variable cams, manifolds and high compression forced induction, all helping their mpg to improve in leaps and bounds. Almost as good as some older diesels without the DPF issues. There is talk in the industry that diesels days are numbered in the personal sector. /QUOTE] Hi Tony, I make the comparison between old and new because I discovered there were so many people out there including "mechanics" who seem to think you can just pull these things off and all is well, as you say its really not that simple. There are even "emulators" out there to trick the ecu into thinking they are still in place but none of these did everything I wanted and that was to lose the 5th injector, egr dpf and cat all in one go. Reading through the link from the OP I would think there could even be implications for the people marketing the emulators or advertising re-mapping, but I guess the "not for road use" offers some get out. What I did discover also is that there is only a handful of people who can truly get into the Denso ECUs on the D4Ds and provide a map to get it to work correctly once all the crap is taken off. Most claim they can but in fact are just supplying and fitting emulators. At least our ecu is still sealed and nothing external connected to attract attention and all of the regeneration software has been disabled now. Quote Link to comment Share on other sites More sharing options...
curious Posted June 19, 2017 Share Posted June 19, 2017 Hi Shane, your absolutely right, there are many people offering these services but haven't got a clue what software their flashing in the customers cars. They buy a slave unit, obtain a map from someone abroad and flash it in, normally a lot of these guys will run in the other direction when you present an odd or late ecu as they have to be opened up without damaging them to gain access to the pads and processors. Sounds like you had to go through a few garages before getting yours done, nothing unusual I see it quite often. In terms of legality it's a bit of a grey area as altering an emission device is affecting the CO Tax group of the vehicle. The owner is responsible as well as the person carrying out the alterations, if they have not advised the customer of the legal ramifications. The idea of a DPF was always set to fail as the dealers selling these as an option on earlier cars didn't understand or take into consideration customers driving habits or usage. As its now mandatory most owners don't know they need to change their driving habits to try and help the DPF from blocking up. Speaking to some of the OEM calibraters that we work with, they are now developing removable exchange filters. So a filter is fitted, when it is time for it to be changed you visit a dealer they remove and swap it for a cleaned one. Sounds like another money spinner for the dealers and a band aid for diesel cars ! Quote Link to comment Share on other sites More sharing options...
Annabella Posted June 19, 2017 Share Posted June 19, 2017 What you just said sums it perfectly. Also with Volvo for example, some 1.6 and 2.0l diesels dpf will block and need replacing no matter how you drive at 75,000, at a cost at Volvo of £1000. Just a cobbled together solution for a dirty engine that the owner gets shafted for. Quote Link to comment Share on other sites More sharing options...
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