I don't think anyone can beat this sound so far after I show off to my friend with IPE exhaust and AWE exhaust..., when valves are closed it will sound just similar to the stock exhaust sound, keeping good relations with the neighbors...

Performance-wise, it does feel more boost in mid-high rpm when valves are opened, at same time auto function can maintain back pressure on low rpm, what a lovely technology

Quality-wise, it's absolutely amazing work of art, best I've seen in the market.
Indoor LOUD revving exhaust sound! This definitely gonna make car alarms to go off in parking lot.
Outdoor valves close & open revving, race car acceleration exhaust sound!
Gopro acceleration exhaust sound!
Taking off the stock exhaust

Ready for installation!

Full set Audi S5 F1 ver. Valvetronic exhaust system, amazing quality!!!

nice CNC valvetronic parts

beautiful titanium plating blue tips

best welding quality muffler I've seen



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