There have been companies advertising that they can remove your DPF from your diesel vehicle.
Diesel particulate filters have been checked for the MOT since February 2014. If your vehicle was originally fitted with a particulate filter and it is now missing the car will fail the MOT.
What is a Diesel Particulate Filter?
Most diesel passenger cars, vans and commercial vehicles, built after 2006 have a DPF installed in the exhaust system. Some vehicles like Peugeot, Citroen & Fiat have had them fitted since 2001. This is a filter designed to reduce the soot particles created from engine combustion from entering the atmosphere.
What does it do?
The diesel particle filter removes polluting chemicals that result from diesel combustion before these particles of polluting matter reach the tailpipe and enter the atmosphere. It works similar to a catalytic converter by trapping and re-heating pollution.