In 1988, Mugen started tuning Honda engines for use in Formula Three, winning the Japanese series with Akihiko Nakaya, and in 1990 expanded their business to Europe.
En 1988, Mugen comezou a preparar motores Honda para usar en Fórmula 3, gañando a serie xaponesa con Akihiko Nakaya, e en 1990 expandió o seu negocio a Europa.