From 204 hp to about 230 hp: the Mercedes-Benz S 250 CDI 204hp (W221 – 2005 – 2013) becomes noticeably stronger and more responsive with Stage 1 software. Torque climbs from 500 Nm to about 560 Nm.

This is a diesel engine with a displacement of 2,143 cc and engine code M651.961. The engine is controlled by the Bosch EDC17CP57, Delphi CRD3.10 and Delphi CRD3.1R. The software file can be written with tools such as Autotuner.

Besides Stage 1, the following options are available for this vehicle: Adblue, EGR OFF, DTC Removal, START/STOP OFF, FLAPS, Pop & Bang Crackle map, DPF OFF and Vmax.

Frequently asked questions

How much power and torque does a Mercedes-Benz S 250 CDI 204hp gain with Stage 1?

About 26 hp and 60 Nm: from 204 hp / 500 Nm to roughly 230 hp / 560 Nm. The exact gain depends on engine condition and fuel quality.

Which ECU does a Mercedes-Benz S 250 CDI 204hp use?

Bosch EDC17CP57, Delphi CRD3.10 and Delphi CRD3.1R.

Which tools can read a Mercedes-Benz S 250 CDI 204hp?

Autotuner.

Which extra options are available for a Mercedes-Benz S 250 CDI 204hp?

Adblue, EGR OFF, DTC Removal, START/STOP OFF, FLAPS, Pop & Bang Crackle map, DPF OFF and Vmax.

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