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Conventional airflow benches do not measure the swirl airflow effect, being restricted to indicate the flow for a given test pressure. This effect directly affects the volumetric efficiency of the engine and, therefore, the performance and fuel consumption of the vehicles. The behavior of swirl in the intake airflow improves the filling capacity of the combustion chamber, homogenizes the air fuel mixture and improves the fuel combustion efficiency, enabling the engine to deliver more power in the same cycle. This paper describes the development of a swirl measurement system to be adapted to conventional flow benches offered on the market, which can be also applied in other tests where the flow swirl effect is important.