Subaru uses a four or five character code to identify all of their engines. The first letter is always ... Subaru announced details of the FB engine on 23 September 2010. By increasing ... Rated output power is 130 kW (180 PS; 170 hp) at 5,200– 5,600 RPM and torque is 300 N⋅m (31 kg⋅m; 220 lb⋅ft) at 1,600–3,600 RPM.