A BMW Z4 3.0i 231hp (E85 – 2003 – 2008) makes about 246 hp and 320 Nm with Stage 1 software, compared with 231 hp and 300 Nm from the factory. That is 15 hp and 20 Nm extra.

This is a petrol engine with a displacement of 2,979 cc and engine code 306S3. The engine is controlled by the Siemens/Continental MS45. The software file can be written with tools such as Alientech KESS3, Alientech KESSv2, Autotuner, CMD CMDFlash and Dimsport New Genius.

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 Z4 3.0i 231hp gain with Stage 1?

About 15 hp and 20 Nm: from 231 hp / 300 Nm to roughly 246 hp / 320 Nm. The exact gain depends on engine condition and fuel quality.

Which ECU does a BMW Z4 3.0i 231hp use?

Siemens/Continental MS45.

Which tools can read a BMW Z4 3.0i 231hp?

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

Which extra options are available for a BMW Z4 3.0i 231hp?

DECAT, FLAPS and Vmax.

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