Biturbo Maserati [Archive] - Maserati Forum Maserati Forum > Maserati Forum > Biturbo Maserati. PDA: Biturbo Speedometer & Tachometer repair; 1985 Coupe FS '85 Biturbo E; Maserati Mechanics in Florida Modifications - Questions.. Need Biturbo Battery size/model info.. New owner, and new to the forum! - Las Vegas; Fuse Box Questions; Youngest Maserati Biturbo Owner; what should I A brief technical guide to the MASERATI BITURBO A brief technical guide to the MASERATI BITURBO. This explains how the Biturbo was launched onto the market powered by a technically sophisticated V6 engine, with innovative solutions, such as the 3-valve per cylinder valvetrain and power via 2 turbochargers, but also with rather traditional mechanics, independent MacPherson strut front suspension,..