# Regulation (EU) No 540/2014 of the European Parliament and of the Council of 16 April 2014 on the sound level of motor vehicles and of replacement silencing systems, and amending Directive 2007/46/EC and repealing Directive 70/157/EEC (Text with EEA relevance), Division 5.3.3

Extent: E+W+S+N.I.

The verification shall be carried out by measuring the back pressure pursuant to point 5.3.4.
The value measured with the replacement silencing system shall not exceed the value measured with the original silencing system by more than 25 % under the conditions mentioned below.

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Source: https://www.legislation.gov.uk/eur/2014/540/annex/IX/division/5/division/5.3/division/5.3.3 (the official version)
Page: https://openlegislation.uk/eu-regulation-2014-540/annex-IX/division-5/division-5.3/division-5.3.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.