Tests: Bad Aftermarket Exhausts Markedly Increase Pollution
Shocking results from one of Europe’s foremost vehicle emissions testing labs have revealed shortcomings in some (legal) replacement exhaust systems. The results show 20 times the level of harmful Nitrogen Dioxide and 50 per cent higher levels of damaging Hydrocarbons being emitted by non Type-approved exhausts, leading to calls from manufacturers such as Klarius for type approval to become mandatory in the UK, as it already is in Europe.
Extensive testing by Longbridge-based Emission Test Facility UK has called the quality of construction, design and materials used in exhaust pipe make-up into question. Emission Test Facility UK’s directors and testers, Tim Colgan and Graham Downing, tested a selection of non Type-approved exhaust systems against an original manufacturers unit and a fully Type-approved replacement model.