Considering an ECU remap for your Lexus IS F 5.0 V8 423hp? A Stage 1 remap can take this 2005 - 2013 petrol engine from 423 BHP to 448 BHP and from 505 Nm to 525 Nm of torque (naturally aspirated). This engine scores 3/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Lexus IS can achieve.
The Lexus IS F 5.0 V8 423hp is a 5.0L naturally aspirated petrol engine producing 423 BHP and 505 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 448 BHP and 525 Nm — a gain of around 25 BHP (6%) and 20 Nm (4%).
This engine has low remap suitability, though the available headroom is limited, so gains are modest compared to higher-output variants. The tuning headroom is classified as limited, based on the percentage gain available from the factory output.
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.. High tuned torque: check transmission torque capacity and service history.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
| Engine | BHP | Gain | Torque | Gain | Score |
|---|---|---|---|---|---|
| 200d 150hp | 150 → 205 | +55 | 340 → 450 | +110 | Excellent (8/10) |
| 220d 177hp | 177 → 205 | +28 | 400 → 450 | +50 | Good (6/10) |
| 250 - 208hp | 208 → 228 | +20 | 252 → 270 | +18 | Moderate (4/10) |
Get a personalised remap quote for your Lexus IS. We'll connect you with a trusted professional in your area.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.
We recommend discussing your specific vehicle with a qualified remap professional before proceeding.
