Will fitting an aftermarket exhaust or DPF to my VW make a difference to emissions?
Klarius, the manufacturer of aftermarket emissions products including exhausts, CATs and Diesel Particulate Filters (DPFs) has confirmed that fitting aftermarket systems will not affect the efficiency or emissions of VW vehicles in the wake of what has been called the ‘diesel dupe’ scandal where an emissions test software ‘cheat’ was allegedly fitted to over 11million VW Group vehicles in order to meet strict US NOx test regulations.