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Lexus GS 300H (2.5i)

Name: Lexus GS 300H (2.5i) chip tuning
Brand: Lexus
Price: 80.00 EUR
Availability: InStock

IV - Facelift (2015–2020) · 223 hp

Stage 1

E85

E85 + Stage 1

	Original	After tuning	Diff
Power hp	223	235	+12
Torque Nm	221	230	+9

Power gain

+5%

Torque gain

+4%

Ready to feel these +12 hp on the road?

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

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 E85	Diff
Power hp	223	230	+7
Torque Nm	221	230	+9

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 €1 535 a year at the pump

Get your E85 adaptation file for the Lexus GS

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

~~10.4 L~~ · €22.07

E85 · 100 km

13.0 L · €11.84

You save ≈ €10.23 every 100 km — about €1 535 a year (over 15 000 km)

E85 uses ≈ +25% 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 GS, calculateur d'économies par département →

	Original	After E85 + Stage 1	Diff
Power hp	223	250	+27
Torque Nm	221	245	+24

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.

+27 hp and €1 535/year saved — both

Get your E85 + Stage 1 file for the Lexus GS

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

~~10.4 L~~ · €22.07

E85 · 100 km

13.0 L · €11.84

You save ≈ €10.23 every 100 km — about €1 535 a year (over 15 000 km)

E85 uses ≈ +25% 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 GS, calculateur d'économies par département →

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