In late 1988, the Japanese commissioned Chiti to design a new Formula One engine with a "flat" layout — as used in their road cars — that was ready in the summer of 1989.
A finais de 1988, os xaponeses encargaron a Chiti deseñar un novo motor de Fórmula Un cun deseño "plano", que utilizaba nos seus coches de rúa, estaba listo no verán de 1989.