Simplify the following text for a Grade 6 native English-speaking person.
Original: There was little success initially competing with Motori Moderni until 1988 and then Cosworth engines , when Nigel Cowperthwaite joined the team , brought in by team manager Jaime Manca Graziadei .
Simplified: They had little success competing with the Motori Moderni engine . In they started using the Cosworth engines .