Considering an ECU remap for your Audi R8 4.2 FSI 420hp? A Stage 1 remap can take this 2007 - 2015 petrol engine from 420 BHP to 440 BHP and from 430 Nm to 455 Nm of torque (naturally aspirated). This engine scores 3.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Audi R8 can achieve.
The Audi R8 4.2 FSI 420hp is a 4.2L naturally aspirated petrol engine producing 420 BHP and 430 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 440 BHP and 455 Nm — a gain of around 20 BHP (5%) and 25 Nm (6%).
This engine has limited 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.
From a technical perspective, the ECU is typically a Bosch MED9/MED17 (varies), and the transmission is manual and dsg/s tronic automatics are common depending on model/engine. some dsg/dual-clutch gearboxes have torque management; calibration may be torque-limited. at this torque level, transmission and driveline servicing history becomes especially important..
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 |
|---|
| 4.2 FSI 430hp | 430 → 440 | +10 | 430 → 455 | +25 | Limited (3/10) |
| 5.2 FSI 525hp | 525 → 570 | +45 | 530 → 580 | +50 | Limited (3.5/10) |
| 5.2 FSI Plus 550hp | 550 → 570 | +20 | 530 → 580 | +50 | Limited (3.5/10) |
| GT 560hp | 560 → 570 | +10 | 540 → 580 | +40 | Limited (3/10) |
Get a personalised remap quote for your Audi R8. 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.
