EPC Exhaust Valve Controller – Plug-and-Play IP68 Waterproof System for BMW & Toyota Supra

The EPC Exhaust Valve Controller gives you direct control over your factory electronic exhaust valves, allowing you to choose how your exhaust sounds—independent of drive mode, RPM, or factory logic.

Instead of relying on BMW or Toyota’s programmed valve behavior, the EPC system lets you open, close, or partially open the exhaust valves on demand. At any time, the system can be returned to factory operation, making it ideal for both daily driving and performance-focused setups.

Plug-and-Play OEM Integration

Designed specifically for vehicles equipped with OEM electronic exhaust valve control, the EPC V2 controller installs cleanly using factory-style connectors. No cutting, splicing, or tapping is required.

Installation is simple:
Unplug the factory connector at the exhaust valve motor, connect the EPC controller inline, and the system is ready to use.

Vehicle Compatibility

This controller is compatible with BMW F-Series and G-Series vehicles, as well as the Toyota A90/A91 Supra, provided the vehicle is equipped with factory electronic exhaust valves.

Common compatible models include, but are not limited to:

• BMW G-Series (e.g. G8X M3/M4, G87 M2, and other G-series models with OEM valve control)

Built for Real-World Use

The EPC V2 system is designed for reliability in real driving conditions:

• IP68 waterproof wiring harness, suitable for trunk or under-vehicle mounting

• Sealed control module for protection from moisture and road exposure

• Memory function that retains your selected valve setting even after the vehicle is restarted

What’s Included

• EPC V2 Exhaust Valve Controller Module

• Premium metal remote control

• OEM-style IP68 waterproof wiring harness

• HomeLink compatibility for factory button integration

Key Features

• Direct control of OEM electronic exhaust valves

• IP68 waterproof harness

• Memory retention after restart

• Premium metal remote

• True plug-and-play installation

• Ability to switch between custom valve control and factory operation

  Compatible with G-Series S58 vehicles equipped with factory electronic exhaust valve control, including but not limited to:

  • BMW G80 / G82 / G83 M3 & M4

  • BMW G87 M2

  • BMW X3M / X4M

  Note: Vehicle must be equipped with OEM electronic exhaust valve motors. Vehicles without factory exhaust valves are not compatible unless an OEM-style electronic valve system is installed.