A BMW M3 M3 321hp (E36 – 1991 – 1998) makes about 350 hp and 380 Nm with Stage 1 software, compared with 321 hp and 350 Nm from the factory. That is 29 hp and 30 Nm extra.

This is a petrol engine with a displacement of 3,201 cc and engine code 326S1. The engine is controlled by the Siemens/Continental MS41 and Siemens/Continental MSS50. The software file can be written with tools such as Alientech KESSv2, Dimsport New Genius and bFlash.

Besides Stage 1, the following options are available for this vehicle: DECAT, FLAPS and Vmax.

Frequently asked questions

How much power and torque does a BMW M3 M3 321hp gain with Stage 1?

About 29 hp and 30 Nm: from 321 hp / 350 Nm to roughly 350 hp / 380 Nm. The exact gain depends on engine condition and fuel quality.

Which ECU does a BMW M3 M3 321hp use?

Siemens/Continental MS41 and Siemens/Continental MSS50.

Which tools can read a BMW M3 M3 321hp?

Alientech KESSv2, Dimsport New Genius and bFlash.

Which extra options are available for a BMW M3 M3 321hp?

DECAT, FLAPS and Vmax.

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