Changes made by Commission Directive 78/665/EEC of 14 July 1978 adapting to technical progress Directive 70/220/EEC on the approximation of the laws of the Member States relating to measures to be taken against pollution of the air by gases from positive ignition engines installed in motor vehicles
EU Directive 1978/665
No changes made by Commission Directive 78/665/EEC of 14 July 1978 adapting to technical progress Directive 70/220/EEC on the approximation of the laws of the Member States relating to measures to be taken against pollution of the air by gases from positive ignition engines installed in motor vehicles are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.