Catalog/ Cars/ Citroën/ C5 / C5 Aircross

Citroën C5 / C5 Aircross 3.0 V6 (2003 - 2008)

Name: Citroën C5 / C5 Aircross 3.0 V6 (2003 - 2008) chip tuning
Brand: Citroën
Price: 70.00 EUR
Availability: InStock

I (2001–2008) · 235 hp

Stage 1

E85

E85 + Stage 1

	Original	After tuning	Diff
Power hp	235	250	+15
Torque Nm	320	335	+15

Power gain

+6%

Torque gain

+5%

Ready to feel these +15 hp on the road?

Get your ready-to-flash Stage 1 file for the Citroën C5 / C5 Aircross

Order tuning file →

Stage 1 file from €70

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 E85	Diff
Power hp	235	245	+10
Torque Nm	320	330	+10

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 €1 597 a year at the pump

Get your E85 adaptation file for the Citroën C5 / C5 Aircross

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

~~11.0 L~~ · €23.26

E85 · 100 km

13.9 L · €12.61

You save ≈ €10.65 every 100 km — about €1 597 a year (over 15 000 km)

E85 uses ≈ +27% more litres, but the pump price (€0.909/L vs €2.121/L, France average on October 30, 2026) more than makes up for it.

🇫🇷 Version française : conversion éthanol E85 de la Citroën C5 / C5 Aircross, calculateur d'économies par département →

	Original	After E85 + Stage 1	Diff
Power hp	235	265	+30
Torque Nm	320	365	+45

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.

+30 hp and €1 597/year saved — both

Get your E85 + Stage 1 file for the Citroën C5 / C5 Aircross

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

~~11.0 L~~ · €23.26

E85 · 100 km

13.9 L · €12.61

You save ≈ €10.65 every 100 km — about €1 597 a year (over 15 000 km)

E85 uses ≈ +27% more litres, but the pump price (€0.909/L vs €2.121/L, France average on October 30, 2026) more than makes up for it.

🇫🇷 Version française : conversion éthanol E85 de la Citroën C5 / C5 Aircross, calculateur d'économies par département →

Original ECU files for Citroen 2 716 stock (ORI) files · €20 per file →