The Forza Componenti Electronic Exhaust Valve Controller Kit for Audi R8 and Audi RS4 is a complete plug-and-play solution that gives drivers full manual control over factory vacuum-actuated exhaust bypass valves. Designed to override OEM ECU valve behavior, this system allows you to adjust exhaust sound output instantly, delivering a more engaging driving experience without permanent vehicle modifications.

The controller uses an integrated circuit board that manages the negative side of the exhaust valve vacuum solenoids. This enables precise and reliable control of exhaust valve position, allowing drivers to open or close the valves at will regardless of engine speed or driving mode.

Built for performance environments, the system is housed in a durable extruded aluminum enclosure and engineered to withstand the high temperatures and demanding conditions found in modern sports car engine bays. All internal components are integrated into a high-reliability printed circuit board design for long-term durability.

Installation is fully plug-and-play, requiring no wiring modifications. The system connects directly to the factory exhaust valve vacuum solenoid connectors using included harnesses. Once installed, control is managed through a remote transmitter or optional interior switch, allowing immediate adjustment of exhaust valve position.

This system is fully reversible and can be removed at any time without leaving any permanent changes to the vehicle.

Operating Modes

• Normal Mode: Exhaust valves operate under factory ECU control
• Always Open Mode: Forces exhaust valves to remain fully open at all times for maximum exhaust sound
• Always Closed Mode: Forces exhaust valves to remain closed for quiet operation and track compliance

The Always Closed mode is ideal for track days or areas with strict sound regulations where reduced exhaust noise is required.

Features and Benefits

• Full manual control of factory exhaust bypass valves
• Compatible with Audi R8 and Audi RS4 models
• Three operating modes: Normal, Always Open, Always Closed
• Plug-and-play installation with no wiring modifications required
• Fully reversible system with no permanent vehicle changes
• Remote control transmitter included
• Optional manual on/off switch configuration
• Fail-safe design reverts to factory ECU control when ignition is off
• No Check Engine Light (CEL) or diagnostic fault codes
• Durable extruded aluminum control module housing
• Weatherproof automotive-grade connectors
• High-temperature resistant wiring rated for engine bay conditions
• High-gain external antenna for improved remote range
• FCC and CE approved components
• Compatible with HomeLink systems (version 5 and newer)
• Includes installation hardware and mounting accessories
• 12-month warranty against manufacturing defects

Fitment

Vehicle Compatibility:

• Audi R8
• Audi RS4

Fitment Notes:

• Fits compatible factory vacuum-actuated exhaust valve systems
• Designed as a plug-and-play solution using OEM-style connectors
• No ECU tuning or programming required
• Fully reversible installation with no permanent modifications
• Remote control operates on 433MHz frequency (HomeLink compatibility depends on vehicle version)