	Original	After tuning	Diff
Power hp	320	400	+80
Torque Nm	680	800	+120

Power gain

+25%

Torque gain

+18%

Ready to feel these +80 hp on the road?

Get your ready-to-flash Stage 1 file for the BMW Serie 8 GC

Order tuning file →

Stage 1 file from €100

Exact price depends on the ECU — confirmed when you upload the file

✓ Original file back-up ✓ Delivered in ~30 min ✓ Support included

Power graph / Stage 1

PowerTorqueStock

	Stock	ECO	Diff
Power hp	320	365	+45
Torque Nm	680	750	+70

ECO tune

Power & torque are eased back a touch and the map is optimised for the lowest possible fuel use — best for daily commuting, towing and long motorway diesel runs. Smoother, calmer, cheaper to run.

Cut your fuel bill by ~7% — €255 a year

Get your ready-to-flash ECO file for the BMW Serie 8 GC

Order tuning file →

ECO file from €100

Exact price depends on the ECU — confirmed when you upload the file

✓ Original file back-up ✓ Delivered in ~30 min ✓ Support included

Fuel economy −7%

Before

~~13.9~~ L / 100 km

With ECO

12.9 L / 100 km

Saves ≈ 1.0 L / 100 km — about 146 L (over 15 000 km) ≈ €255

Estimate for a typical duty cycle · real saving depends on load & driving style

BMW Serie 8 GC 840d