It suggests that workshops look to revive a failing DPF rather than falling foul of legislation by removing the exhaust after treatment device.
The new rules which came into effect this month, will see testers check the vehicle meets the emission targets set by the manufacturer during development, and ensure the DPF is not tampered or removed.
Transport Minister Robert Goodwill said: “I am very concerned that vehicles are being modified in a way that is clearly detrimental to people’s health and undoes the hard work manufacturers have taken to improve emission standards.
“It has become apparent the government had to intervene to clarify the position on particulate filter removal given the unacceptable negative impact on air quality.”
Randstad, which has experienced a large amount of success from its petrol and diesel engine cleaning system Terraclean, has introduced a new exhaust gas recirculation tool which not only cleans the EGR but it also clears and de-clogs air and inlet manifolds and cleans DPFs.
Martin Dowd, Managing Director of Randstad, added: “The new EGR Cleaning Tool provides workshops in the UK with an excellent opportunity to offer a DPF revival or restoration service instead of removal.”