Lexus GS 2005 - 2012 300 250hp

Real standard and upgraded performance figures for the 300 250hp engine in the Lexus GS 2005 - 2012.

These are real standard and Stage 1 (and where available, Stage 2) figures for the Lexus GS 2005 - 2012 300 250hp — not a generic estimate for the model range.

Horsepower (HP)Torque (Nm)
Standard250310
Stage 1270330
Stage 2280340
Make
Lexus
Model
GS
Generation
2005 - 2012
Engine
300 250hp
Fuel type
petrol

Frequently asked questions

Is Stage 1 tuning safe for the Lexus GS 2005 - 2012 300 250hp?

Yes — Stage 1 for this engine is a software-only remap calibrated to stay within its stock mechanical limits (turbo, clutch, fueling), so no hardware changes are required.

How much more power does the 300 250hp make after tuning?

Standard output is 250 HP / 310 Nm; Stage 1 on this engine typically reaches 270 HP / 330 Nm. Exact results can vary slightly with fuel quality and vehicle condition.

How long does a Lexus GS 2005 - 2012 300 250hp remap take?

Once your original file is uploaded through the member panel, most requests for this engine are completed within a few hours.

Can the 300 250hp be reverted to its original file?

Yes — we keep the original file on record for the request, so the ECU can be put back to stock at any time.