[axenservices]

Could someone please tell me what bmw did to the 2.5si to get more power out of the engine that is in the 2.5.

Model Years made Engine Code Engine Type Power@rpm Torque@rpm


2.5i 2003–2005 M54B25 2,494 cc (2.494 L; 152.2 cu in) I6 192 PS (141 kW; 189 hp)@6000 245 N·m (181 lb·ft)@3500
2.5i 2006–2008 N52B25 2,497 cc (2.497 L; 152.4 cu in) I6 177 PS (130 kW; 175 hp)@5800 230 N·m (170 lb·ft)@3500
2.5si 2006–2008 N52B25 2,497 cc (2.497 L; 152.4 cu in) I6 218 PS (160 kW; 215 hp)@6500 250 N·m (180 lb·ft)@2750

thanks ahead of time