Audi RS4 B7 - 2004 - 2008 4.2 FSI V8 420hp ECU Remapping
A professional ECU remap can optimise the way your Audi RS4 delivers power and torque, helping the vehicle feel stronger, smoother and more responsive in everyday driving.
The expected Stage 1 figures for this vehicle show an increase from 420 BHP to 440 BHP, with torque improving from 430 Nm to 455 Nm.