BMW X6 M X6 M 4.4 V8 Bi-Turbo

F86 (12/2014–2018) · 575 hp

Stage 1

E85

E85 + Stage 1

	Original	After tuning	Diff
Power hp	575	680	+105
Torque Nm	750	850	+100

Power gain

+18%

Torque gain

+13%

Ready to feel these +105 hp on the road?

Get your ready-to-flash Stage 1 file for the BMW X6 M

Order tuning file →

Stage 1 file: €105

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

Power graph / Stage 1

PowerTorqueStock

	Original	After E85	Diff
Power hp	575	595	+20
Torque Nm	750	775	+25

E85 adaptation (no Stage 1)

Just the fuel switch: the ECU is adapted to run Superéthanol E85 (up to 85% bio-ethanol) with no Stage 1 chip on top. You get a small power bump from ethanol's higher octane (~104 RON) and a much cheaper fill-up. Flex Fuel file: the car still runs on regular petrol whenever you want.

Save €3 884 a year at the pump

Get your E85 adaptation file for the BMW X6 M

Order tuning file →

File from €100

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

Fuel cost — E85 vs petrol −45%

Petrol · 100 km

~~26.8 L~~ · €56.97

E85 · 100 km

34.2 L · €31.07

You save ≈ €25.89 every 100 km — about €3 884 a year (over 15 000 km)

E85 uses ≈ +27% more litres, but the pump price (€0.909/L vs €2.123/L, France average on October 29, 2026) more than makes up for it.

🇫🇷 Version française : conversion éthanol E85 de la BMW X6 M, calculateur d'économies par département →

	Original	After E85 + Stage 1	Diff
Power hp	575	730	+155
Torque Nm	750	915	+165

E85 + Stage 1 remap

Chip tuning re-optimised for Superéthanol E85: the ignition and boost maps are calibrated to make full use of ethanol's higher octane (~104 RON). Bigger power and torque gains than either Stage 1 on petrol or E85 adaptation alone, plus the same cheap fill-up.

+155 hp and €3 884/year saved — both

Get your E85 + Stage 1 file for the BMW X6 M

Order tuning file →

File from €100

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

Fuel cost — E85 vs petrol −45%

Petrol · 100 km

~~26.8 L~~ · €56.97

E85 · 100 km

34.2 L · €31.07

You save ≈ €25.89 every 100 km — about €3 884 a year (over 15 000 km)

E85 uses ≈ +27% more litres, but the pump price (€0.909/L vs €2.123/L, France average on October 29, 2026) more than makes up for it.

🇫🇷 Version française : conversion éthanol E85 de la BMW X6 M, calculateur d'économies par département →

Original ECU files for BMW 28 112 stock (ORI) files · €20 per file →