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The most remarkable aspect is the clean tone at all rpm ranges
When the valves are closed
Once rpm increases
Experience the ultimate in performance and luxury with the Audi A4/A5 B9 Quattro iPE Exhaust System
Different exhaust parts are offered depending on the vehicle version
Audi S4/S5 3.0T B9 Fi Original Exhaust System Audi-A4-2017 The most remarkable aspect isAudi B9 S5 (Non Sport Diff Vehicles Only) Fi Exhaust (Frequency Intelligent Exhaust) high performance valvetronic exhaust system is direct replacement bolt on system manufactured out of a high grade T304 stainless steel that offers an exhilarating soundtrack. The Fi EXHAUST system is designed with a valvetronic technology to control airflow, sound volume and enhance the overall performance and torque. On average horsepower is expected to increase from
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