Complex sentence: In 1986 Maserati launched the high-performance 430 (1986--94), the flagship of the saloon range, which debuted the largest 2.8 litre version of the Biturbo engine.
Split into simpler sentences: In 1986 Maserati launched the high-performance 430 (1986--94), the flagship of the saloon range. It debuted the largest 2.8 litre version of the Biturbo engine.