Microcar Lyra sound - open headers vs. stock exhaust

About Microcar

Microcar is a term often used for the smallest size of cars, with three or four wheels and typically with an engine smaller than 700 cc (43 cu in). Specific types of microcars include bubble cars, cycle cars, invacar, quadricycles and voiturettes. Microcars are often covered by separate regulations from normal cars, having relaxed requirements for registration and licensing.