Audi RS4 4.2 FSI V8 420hp chiptuning
B7 (2004–2008) · Petrol · ECU: Bosch MED9
Stage 1: +20 hp & +25 Nm
Audi RS4 4.2 FSI V8 420hp · 420 hp · 430 Nm
Power+20 hp · +5%
Stock420hp
Stage 1440hp
Torque+25 Nm · +6%
Stock430Nm
Stage 1455Nm
Engine ECU
Read methods
Available options
With an individually developed Stage 1 tuning file, the Audi RS4 4.2 FSI V8 420hp with 420 hp and 430 Nm gets 440 hp and 455 Nm – an increase of +20 hp (5%) and +25 Nm. The file is created by our tuning engineers for your exact software version on the Bosch MED9 ECU and is delivered via our file service portal in 5–15 minutes. Options such as Anti lag, DECAT, DTC Removal, FLAPS can be combined in the same file.
Values are guide values from our dyno and comparable vehicles. Actual results depend on condition, hardware and fuel quality. Use only where legally permitted.
Technical data
| Fuel | Petrol |
| Displacement | 4163 CC |
| Compression ratio | 12.5 : 1 |
| Bore × stroke | 84.5 X 92.8 mm |
| Engine code | BNS |
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