Common use of Measurement of vehicle performance Clause in Contracts

Measurement of vehicle performance. 6.4.1. The NORESS or its components shall be such as to ensure that the vehicle’s performance is comparable with that achieved with the original exhaust silencing system or components thereof. 6.4.2. The NORESS or, at the manufacturer's choice, the components thereof shall be compared with an original silencing system or components, also in new condition, successively fitted to the vehicle referred to in paragraph 3.3. (c). 6.4.3. The verification shall be carried out by measuring the output curve in accordance with paragraph 6.4.1. or 6.4.2. The maximum power and the engine speed at maximum power measured with the NORESS shall not exceed the net power and the engine speed measured under the conditions set out below with the original equipment exhaust system by more than ±5 per cent.