Catalog/ Cars/ Lexus/ IS

Lexus IS 350 ECT-i (3.5 V6)

Name: Lexus IS 350 ECT-i (3.5 V6) chip tuning
Brand: Lexus
Price: 95.00 EUR
Availability: InStock

XE20 (2005–2008) · 306 hp

Stage 1

E85

E85 + Stage 1

	Original	After tuning	Diff
Power hp	306	320	+14
Torque Nm	376	390	+14

Power gain

+5%

Torque gain

+4%

Ready to feel these +14 hp on the road?

Get your ready-to-flash Stage 1 file for the Lexus IS

Order tuning file →

Stage 1 file: €95

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

Power graph / Stage 1

PowerTorqueStock

	Original	After E85	Diff
Power hp	306	320	+14
Torque Nm	376	390	+14

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 €2 150 a year at the pump

Get your E85 adaptation file for the Lexus IS

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

~~14.3 L~~ · €30.29

E85 · 100 km

17.6 L · €15.95

You save ≈ €14.33 every 100 km — about €2 150 a year (over 15 000 km)

E85 uses ≈ +23% 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 Lexus IS, calculateur d'économies par département →

	Original	After E85 + Stage 1	Diff
Power hp	306	345	+39
Torque Nm	376	430	+54

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.

+39 hp and €2 150/year saved — both

Get your E85 + Stage 1 file for the Lexus IS

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

~~14.3 L~~ · €30.29

E85 · 100 km

17.6 L · €15.95

You save ≈ €14.33 every 100 km — about €2 150 a year (over 15 000 km)

E85 uses ≈ +23% 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 Lexus IS, calculateur d'économies par département →

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