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Audi A8 4.0 V8 TFSI

Name: Audi A8 4.0 V8 TFSI chip tuning
Brand: Audi
Price: 120.00 EUR
Availability: InStock

D4 Facelift (2013–2017) · 435 hp

Stage 1

E85

E85 + Stage 1

	Original	After tuning	Diff
Power hp	435	520	+85
Torque Nm	600	800	+200

Power gain

+20%

Torque gain

+33%

Ready to feel these +85 hp on the road?

Get your ready-to-flash Stage 1 file for the Audi A8

Order tuning file →

Stage 1 file: €120

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

Power graph / Stage 1

PowerTorqueStock

	Original	After E85	Diff
Power hp	435	455	+20
Torque Nm	600	620	+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 €2 903 a year at the pump

Get your E85 adaptation file for the Audi A8

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

~~20.3 L~~ · €42.59

E85 · 100 km

25.6 L · €23.24

You save ≈ €19.35 every 100 km — about €2 903 a year (over 15 000 km)

E85 uses ≈ +26% more litres, but the pump price (€0.906/L vs €2.098/L, France average on November 3, 2026) more than makes up for it.

🇫🇷 Version française : conversion éthanol E85 de la Audi A8, calculateur d'économies par département →

	Original	After E85 + Stage 1	Diff
Power hp	435	550	+115
Torque Nm	600	855	+255

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.

+115 hp and €2 903/year saved — both

Get your E85 + Stage 1 file for the Audi A8

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

~~20.3 L~~ · €42.59

E85 · 100 km

25.6 L · €23.24

You save ≈ €19.35 every 100 km — about €2 903 a year (over 15 000 km)

E85 uses ≈ +26% more litres, but the pump price (€0.906/L vs €2.098/L, France average on November 3, 2026) more than makes up for it.

🇫🇷 Version française : conversion éthanol E85 de la Audi A8, calculateur d'économies par département →

Original ECU files for Audi A8 Stock (ORI) files of this model · €20 per file →