From 306 hp to about 365 hp: the BMW X3 3.5i 306hp (F25 – 2011 – 2017) becomes noticeably stronger and more responsive with Stage 1 software. Torque climbs from 400 Nm to about 520 Nm.

This is a petrol engine with a displacement of 2,979 cc and engine code N55B30A. The engine is controlled by the Bosch MEVD17.2, Bosch MEVD17.2.6 and Bosch MEVD17.2.G, the gearbox by the ZF 8HP. 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, START/STOP OFF, FLAPS, Pop & Bang Crackle map and Vmax.

Frequently asked questions

How much power and torque does a BMW X3 3.5i 306hp gain with Stage 1?

About 59 hp and 120 Nm: from 306 hp / 400 Nm to roughly 365 hp / 520 Nm. The exact gain depends on engine condition and fuel quality.

Which ECU does a BMW X3 3.5i 306hp use?

Bosch MEVD17.2, Bosch MEVD17.2.6 and Bosch MEVD17.2.G (engine); ZF 8HP (gearbox).

Which tools can read a BMW X3 3.5i 306hp?

Alientech KESS3, Alientech KESSv2, Autotuner, ByteShooter Toolbox, CMD CMDFlash and MagicMotorsport Flex.

Which extra options are available for a BMW X3 3.5i 306hp?

DECAT, DTC Removal, START/STOP OFF, 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.