From 340 hp to about 380 hp: the BMW 8 serie 840d 340hp (2022 -> …) becomes noticeably stronger and more responsive with Stage 1 software. Torque climbs from 700 Nm to about 750 Nm.

This is a mild-hybrid diesel engine with a displacement of 2,993 cc.

Frequently asked questions

How much power and torque does a BMW 8 serie 840d 340hp gain with Stage 1?

About 40 hp and 50 Nm: from 340 hp / 700 Nm to roughly 380 hp / 750 Nm. The exact gain depends on engine condition and fuel quality.

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