Catalog/ Cars/ BMW/ Serie 4

BMW Serie 4 M440i (3.0T)

G22/23 (2020–2024) · 374 hp

Stage 1

Stage 2

E85

E85 + Stage 1

	Original	After tuning	Diff
Power hp	374	420	+46
Torque Nm	500	620	+120

Power gain

+12%

Torque gain

+24%

Ready to feel these +46 hp on the road?

Get your ready-to-flash Stage 1 file for the BMW Serie 4

Order tuning file →

Stage 1 file: €120

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

Power graph / Stage 1

PowerTorqueStock

	Original	After tuning	Diff
Power hp	374	450	+76
Torque Nm	500	650	+150

Power gain

+20%

Torque gain

+30%

Ready to feel these +76 hp on the road?

Get your ready-to-flash Stage 2 file for the BMW Serie 4

Order tuning file →

Stage 2 file: €180

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

Power graph / Stage 2

PowerTorqueStock

	Original	After E85	Diff
Power hp	374	385	+11
Torque Nm	500	520	+20

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 €2 522 a year at the pump

Get your E85 adaptation file for the BMW Serie 4

Order tuning file →

File from €100

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

Fuel cost — E85 vs petrol −46%

Petrol · 100 km

~~17.5 L~~ · €36.93

E85 · 100 km

22.1 L · €20.12

You save ≈ €16.82 every 100 km — about €2 522 a year (over 15 000 km)

E85 uses ≈ +27% more litres, but the pump price (€0.909/L vs €2.116/L, France average on October 30, 2026) more than makes up for it.

🇫🇷 Version française : conversion éthanol E85 de la BMW Serie 4, calculateur d'économies par département →

	Original	After E85 + Stage 1	Diff
Power hp	374	445	+71
Torque Nm	500	675	+175

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.

+71 hp and €2 522/year saved — both

Get your E85 + Stage 1 file for the BMW Serie 4

Order tuning file →

File from €100

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

Fuel cost — E85 vs petrol −46%

Petrol · 100 km

~~17.5 L~~ · €36.93

E85 · 100 km

22.1 L · €20.12

You save ≈ €16.82 every 100 km — about €2 522 a year (over 15 000 km)

E85 uses ≈ +27% more litres, but the pump price (€0.909/L vs €2.116/L, France average on October 30, 2026) more than makes up for it.

🇫🇷 Version française : conversion éthanol E85 de la BMW Serie 4, calculateur d'économies par département →

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