Tuning file Audi RS4 (B7 - 2004 - 2008) 4.2 FSI V8 420hp

ST Chiptuning is leading in the development of Audi RS4 4.2 FSI V8 420hp tuning files. The development of each Audi RS4 4.2 FSI V8 420hp tuning file is the result of perfection and dedication by ST Chiptuning programmers. The organization only uses the latest technologies and has many years experience in ECU remapping software. Many (chiptuning) organizations around the globe download their tuning files for Audi RS4 4.2 FSI V8 420hp at ST Chiptuning for the best possible result. All Audi RS4 4.2 FSI V8 420hp tuning files deliver the best possible performance and results within the safety margins.

• 100% custom made tuning file guarantee;
• Tested and developed via a 4x4 Dynometer;
• Best possible performance and results, within the safety margins;
• Reduced fuel consumption.