Considering an ECU remap for your Audi A8 4.2i 335hp? A Stage 1 remap can take this D3 - 2003 - 2010 petrol engine from 335 BHP to 355 BHP and from 430 Nm to 450 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 A8 can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The Audi A8 4.2i 335hp is a 4.2L naturally aspirated petrol engine producing 335 BHP and 430 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 355 BHP and 450 Nm — a gain of around 20 BHP (6%) and 20 Nm (5%).
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 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 |
|---|---|---|---|---|---|
| 3.0 TDI 233hp | 233 → 280 | +47 | 450 → 575 | +125 | Good (7/10) |
| 3.2 FSI 260hp | 260 → 280 | +20 | 330 → 355 | +25 | Moderate (4/10) |
| 4.0 TDI 275hp | 275 → 330 | +55 | 650 → 770 | +120 | Good (6.5/10) |
| 4.2 TDI 326hp | 326 → 380 | +54 | 650 → 880 | +230 | Good (7/10) |
| 4.2 FSI 350hp | 350 → 375 | +25 | 440 → 465 | +25 | Limited (3.5/10) |
| 6.0i W12 | 450 → 475 | +25 | 580 → 610 | +30 | Limited (3.5/10) |
| S8 5.2 FSI 450hp | 450 → 475 | +25 | 540 → 565 | +25 | Limited (3.5/10) |
Get a personalised remap quote for your Audi A8. 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.
