For example, the same number, position and similar styling of intake and exhaust ports, but here refined, combined and utilized to improve airflow and overall effect at road speeds.
With the increased airflow and reduced covering, intake noise is usually increased, which may manifest as a sucking sound, and the loss of any silencing properties that the factory intake had.
增加和减少气流覆盖，进气噪声通常是增加，这可能显化成一个声音，造成的损失的性质，该工厂摄入沉默。
3
The present invention relates to a hydrocarbon trap positioned in the air intake system of a vehicle, upstream from the engine and wholly in the airflow.