[QUOTE 4101062, member: 9609"]wow, they have certainly come down a lot in price, a year or so ago they were around the 1000 mark. I was chatting to someone recently and a MAN (as in VW trucks) dealer was going to charge £8,000 to replace the DPF in a tipper. (I doubt it will have been replaced, many gut them them and map them out) its a total disaster for the air we are breathing.
Its actually even worse than that - vehicles that have had them removed produce more Particle Matter in town centres than engines where they were never fitted in the first place
The anti-pollution system in modern diesel vehicles has been designed to greatly reduce the vevy harmful pollutant NOX, this is done by lowering cylinder temperatures via the EGR when the engine is not working hard such as in congested urban areas. The by product of the lower cylinder temperatures is very high levels of the lung destroying cancer causing Particle Matter. This is where the DPF comes into play, it captures the particle matter, then releases it later when the car is being driven properly in the countryside (still not nice but it will cause less damage to people there) So with the DPF removed you are causing even more problems to pedestrians and cyclists in town centres, than diesel vehicles did before they were mandatory.
Up until very recently there was hundreds of companies advertising to remove / delete DPF. It was a very common thing to do, hence the change to the MOT, but this change will still not catch those who have had the DPF gutted (the working bit of the DPF removed but the case left intact) , as the MOT only looks to see if the device is fitted, there is NO check to see if it is working.
The latest idiocy that is wide spread and quite popular is "Ad Blue" Removal do a search for it
https://www.google.com/search?q=ad+blue+removal+hgv&ie=utf-8&oe=utf-8#q=HGV+adblue+removal
The situation is horrendous, the manufacturer has to fit all this anti pollution stuff, but outwith the centre of London it does not need to be on your vehicle, and as it is expensive to run and very unreliable many just remove it. Please learn more about this stuff and complain, its complete madness.[/QUOTE]
And if like me you want to learn a bit about Ad-Blue
this seems reasonable.
It does seem as if the more they legislate the more loopholes are opened, especially after the VW revelations.
. I had a car where the CAT internals collapsed. I took the CAT off and knocked the internals out of it, then put it back on. At the next MOT the car had lower emission levels when testing, than when the CAT was in place and working correctly.
