Turbocharging was prohibited at the end of 1988 in response to the increasing four-figure power outputs, which meant a return to developing naturally aspirated configurations that had not been widely used since the beginning of the decade.
A finais de 1988, prohibíronse os turbocompresores en resposta aos aumentos en potencia de catro cifras, o que significou un retorno ao desenvolvemento de configuracións dos motores de aspiración natural que non se utilizaban desde o inicio da década.