BMW M5

F90 2017 2023 · M5 CS (F90) - 4.4 V8 Bi-Turbo

Stage 1

E85

E85 + Stage 1

	Original	After tuning	Diff
Power hp	635	680	+45
Torque Nm	750	850	+100

Power gain

+7%

Torque gain

+13%

Ready to feel these +45 hp on the road?

Get your ready-to-flash Stage 1 file for the BMW M5

Order tuning file →

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

Power graph / Stage 1

PowerTorqueStock

	Original	After E85	Diff
Power hp	635	655	+20
Torque Nm	750	780	+30

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. Fully reversible; the car still runs on regular petrol whenever you want.

Save €4 441 a year at the pump

Get your E85 adaptation file for the BMW M5

Order tuning file →

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

Fuel cost — E85 vs petrol −48%

Petrol · 100 km

~~29.6 L~~ · €61.04

E85 · 100 km

37.0 L · €31.44

You save ≈ €29.61 every 100 km — about €4 441 a year (over 15 000 km)

E85 uses ≈ +25% more litres, but the pump price (€0.85/L vs €2.06/L) more than makes up for it.

	Original	After E85 + Stage 1	Diff
Power hp	635	735	+100
Torque Nm	750	935	+185

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.

+100 hp and €4 441/year saved — both

Get your E85 + Stage 1 file for the BMW M5

Order tuning file →

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

Fuel cost — E85 vs petrol −48%

Petrol · 100 km

~~29.6 L~~ · €61.04

E85 · 100 km

37.0 L · €31.44

You save ≈ €29.61 every 100 km — about €4 441 a year (over 15 000 km)

E85 uses ≈ +25% more litres, but the pump price (€0.85/L vs €2.06/L) more than makes up for it.