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Originally Posted by Daox
Pretty much every maker is claiming better efficiency despite the new emissions equipment.
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They would have even better efficiency without it.
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I also find it hard to believe that the equipment just doesn't work.
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There's plenty of evidence though on EU car forums.
Enough to have companies offering DPF removal services !
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It obviously goes through a lot of testing and it wouldn't pass the emissions tests if it didn't work.
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They don't exactly use X years old cars for the tests.
The cars are new(ish) , especially prepared and checked to make sure everything is working 110% .
The tests are also so short that the DPF equipment doesn't even have to work during the tests - the filtering will obviously work, but the car won't need to regenerate the filter during the tests.