BHP+54 hp (17%)
Standard
326 hp
Tuned
380 hp
Torque+230 Nm (35%)
Standard
650 Nm
Tuned
880 Nm
Suitability
Good (7/10)Gains Profile
Torque-focusedHeadroom
HighAudi A8 4.2 TDI 326hp ECU Remapping
Considering an ECU remap for your Audi A8 4.2 TDI 326hp? A Stage 1 remap can take this D3 - 2003 - 2010 diesel engine from 326 BHP to 380 BHP and from 650 Nm to 880 Nm of torque (turbocharged). This engine scores 7/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Audi A8 can achieve.
How this engine compares
- 16thof 35 Audi A8 engines by power gain
- 81%of the 9,842 engines we hold gain data for see a smaller power increase
- 96%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The Audi A8 4.2 TDI 326hp is a 4.2L turbocharged diesel engine producing 326 BHP and 650 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 380 BHP and 880 Nm — a gain of around 54 BHP (17%) and 230 Nm (35%).
This engine has moderate remap suitability, with gains weighted towards torque — you will notice the difference most strongly in mid-range pulling power and in-gear acceleration. The tuning headroom is classified as high, based on the percentage gain available from the factory output.
From a technical perspective, the ECU is typically a Bosch EDC15 (likely), 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: High tuned torque: check transmission torque capacity and service history.. Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.. Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
Fuel economy note: economy gains unlikely at full power; depends on driving style.
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.