A BMW Z4 2.2i 170hp (E85 – 2003 – 2008) makes about 185 hp and 235 Nm with Stage 1 software, compared with 170 hp and 210 Nm from the factory. That is 15 hp and 25 Nm extra.

This is a petrol engine with a displacement of 2,171 cc and engine code 226S1. The engine is controlled by the Siemens/Continental MS45. The software file can be written with tools such as Alientech KESSv2.

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 2.2i 170hp gain with Stage 1?

About 15 hp and 25 Nm: from 170 hp / 210 Nm to roughly 185 hp / 235 Nm. The exact gain depends on engine condition and fuel quality.

Which ECU does a BMW Z4 2.2i 170hp use?

Siemens/Continental MS45.

Which tools can read a BMW Z4 2.2i 170hp?

Alientech KESSv2.

Which extra options are available for a BMW Z4 2.2i 170hp?

DECAT, FLAPS and Vmax.

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