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Frequency Intelligent Valvetronic Exhaust System technology offers cutting-edge intelligent ECU exhaust control valve, with an emphasis on the optimization of both acoustics and performance. It is a testament to their philosophy of the ultimate union of comfort and performance experience for the driver and passengers.

FI Exhaust Pro App makes your exhaust Intelligent !

Intelligent Fi Pro Control Box
Fi Pro Version control box can be used with FI Exhaust vacuum valve system and with OEM electric valves for Mercedes-Benz, BMW and Audi models.

Your Second Digital Display
Smart and intuitive interface instantly shows valve status.

Automatically Deletes CEL
FI Exhaust Pro App automatically detects and erases annoying check engine error codes related to catalytic convertor.

Assign Remote Button Functions
Customize what 2 buttons on the physical remote do. Choose between 3 options: manually open or close the valves or activate Auto Mode.

Faster Bluetooth Connection
Fast pairing and connection with FI Exhaust Pro Bluetooth.

Pair Multiple Remote Controls
No matter what car or Fi Pro Version remote control you're using, you can always connect to a Bluetooth control box and control valves.


  • Fi Pro Version control box for remote access to Vacuum Valve Systems
  • Bluetooth connectivity
  • Intelligent App for managing sound and Check Engine errors


  • designed for FI Exhaust's line of Vacuum Valve Systems

FI Exhaust Fi Pro Remote Interchangeable Ring Valvetronic Exhaust

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