He also won the famous Daytona 24 hour race in 1985, co-driving the Porsche 956 from the Preston Henn Racing with Bob Wollek, AJ Foyt and Al Unser Sr. Boutsen was considered a promising driver, testing for McLaren and Brabham.
Tamén gañou a famosa carreira das 24 horas de Daytona en 1985, co-pilotando o Porsche 956 de Preston Henn Racing con Bob Wollek, AJ Foyt e Ao Unser Sr. Boutsen era considerado un piloto prometedor, e probou para McLaren e Brabham.