The 2 L engine in the BMW 6 Series is at the top end of what this displacement produces — serious injection pressure, sophisticated turbocharger management, and a factory calibration that leaves room on the table by design. These engines are well-engineered enough that a careful, dyno-developed map extracts meaningful gains without asking anything the hardware isn't already built to handle.
Our dyno-developed map for the BMW 6 Series adds an average of 28 kW (25%) at the wheels and 104 Nm (26%) of engine torque. At this level the car genuinely changes character — overtaking on single-lane highways stops being a commitment, and the mid-range pull from around 1,500 to 3,000 rpm is transformed. You notice it most on the highway on-ramp and in the first third of an overtake.
In practical terms, that works out to around 6 fewer tanks of diesel over 40,000 km. At a typical 15,000 km annual mileage, most BMW 6 Series owners save roughly 162 L and $194 per year at the pump — purely from improved combustion efficiency at part-throttle, where diesels spend most of their time.
This BMW 6 Series variant was sold in 2020 only. We hold the original factory calibration file for that model year and develop the map on our dyno against that specific ECU — not a generic file that also fits a different year or spec.
BMW B47
The B47 (post-2014, 2.0) is a substantial improvement on the N47 — better breathing, better fuelling, friendlier ECU access. The B47 is one of our favourite four-cylinder diesels to tune.