Catalog/ Cars/ BMW/ Serie 4 GC

BMW Serie 4 GC 428i SULEV

F36 (2014–2016) · 245 hp

Stage 1

Stage 2

E85

E85 + Stage 1

	Original	After tuning	Diff
Power hp	245	280	+35
Torque Nm	350	430	+80

Power gain

+14%

Torque gain

+23%

Ready to feel these +35 hp on the road?

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

Order tuning file →

Stage 1 file from €80

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

	Original	After tuning	Diff
Power hp	245	300	+55
Torque Nm	350	450	+100

Power gain

+22%

Torque gain

+29%

Ready to feel these +55 hp on the road?

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

Order tuning file →

Stage 2 file from €80

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 2

PowerTorqueStock

	Original	After E85	Diff
Power hp	245	255	+10
Torque Nm	350	365	+15

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 €1 707 a year at the pump

Get your E85 adaptation file for the BMW Serie 4 GC

Order tuning file →

File from €100

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

Fuel cost — E85 vs petrol −47%

Petrol · 100 km

~~11.4 L~~ · €24.27

E85 · 100 km

14.2 L · €12.89

You save ≈ €11.38 every 100 km — about €1 707 a year (over 15 000 km)

E85 uses ≈ +24% 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 Serie 4 GC, calculateur d'économies par département →

	Original	After E85 + Stage 1	Diff
Power hp	245	280	+35
Torque Nm	350	430	+80

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.

+35 hp and €1 707/year saved — both

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

Order tuning file →

File from €100

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

Fuel cost — E85 vs petrol −47%

Petrol · 100 km

~~11.4 L~~ · €24.27

E85 · 100 km

14.2 L · €12.89

You save ≈ €11.38 every 100 km — about €1 707 a year (over 15 000 km)

E85 uses ≈ +24% 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 Serie 4 GC, calculateur d'économies par département →

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