A BMW 5 serie 523i 177hp (E60/61 – 2003 – 2010) makes about 194 hp and 250 Nm with Stage 1 software, compared with 177 hp and 230 Nm from the factory. That is 17 hp and 20 Nm extra.

This is a petrol engine with a displacement of 2,487 cc and engine code N52B25A. The engine is controlled by the Siemens/Continental MSV70, Siemens/Continental MSV80 and Siemens/Continental MSD80. The software file can be written with tools such as Alientech KESS3, Alientech KESSv2, Autotuner, ByteShooter Toolbox, CMD CMDFlash and 1 more.

Besides Stage 1, the following options are available for this vehicle: DECAT, DTC Removal, FLAPS, Pop & Bang Crackle map and Vmax.

Frequently asked questions

How much power and torque does a BMW 5 serie 523i 177hp gain with Stage 1?

About 17 hp and 20 Nm: from 177 hp / 230 Nm to roughly 194 hp / 250 Nm. The exact gain depends on engine condition and fuel quality.

Which ECU does a BMW 5 serie 523i 177hp use?

Siemens/Continental MSV70, Siemens/Continental MSV80 and Siemens/Continental MSD80.

Which tools can read a BMW 5 serie 523i 177hp?

Alientech KESS3, Alientech KESSv2, Autotuner, ByteShooter Toolbox, CMD CMDFlash and Dimsport New Genius.

Which extra options are available for a BMW 5 serie 523i 177hp?

DECAT, DTC Removal, FLAPS, Pop & Bang Crackle map and Vmax.

Figures are indicative and vehicle specific. Check the regulations that apply in your country before modifying engine software.