Model B4A Exhaust Controller

from $375.00

For vehicles with a single vacuum control valve. Some vehicles require adapter plugs and price of the controller for those vehicles includes the adapter plugs.

The exhaust controller is suitable for installation in harsh environments such as the engine bay of a high-performance sports car.

Depending on the application, the controller offers up to three modes of operation:

  • Normal Mode: The vehicle's ECU controls the operation of the exhaust bypass valves. This is the stock mode.

  • Always Open Mode: Forces the valves to remain open at all times, overriding the vehicle's ECU.

  • Always Closed Mode: Forces the valves to remain closed at all times. Not available on Lotus. Not available on turbocharged cars.

You can view the vehicle compatibility matrix here. If your vehicle is not listed, contact us for compatibility.

Note: Due to supply chain differences, the controller may ship with a different style remote fob than depicted.

Brand:
Model:

For vehicles with a single vacuum control valve. Some vehicles require adapter plugs and price of the controller for those vehicles includes the adapter plugs.

The exhaust controller is suitable for installation in harsh environments such as the engine bay of a high-performance sports car.

Depending on the application, the controller offers up to three modes of operation:

  • Normal Mode: The vehicle's ECU controls the operation of the exhaust bypass valves. This is the stock mode.

  • Always Open Mode: Forces the valves to remain open at all times, overriding the vehicle's ECU.

  • Always Closed Mode: Forces the valves to remain closed at all times. Not available on Lotus. Not available on turbocharged cars.

You can view the vehicle compatibility matrix here. If your vehicle is not listed, contact us for compatibility.

Note: Due to supply chain differences, the controller may ship with a different style remote fob than depicted.

  • Plug-and-Play ... 100% Reversible

    The kit is completely plug-and-play. Power for the controller comes from the existing connector to the car's exhaust bypass vacuum solenoids, and no wiring modification are required because the kit includes connector cables for the vacuum solenoids. Since no modification are required to install, if you ever want to remove the controller the installation is 100% reversible.

    Start-up option user configurable for Always Open or Normal Mode (ECU Control).

    Simplified installation is straight forward. The small size makes it easy to find a suitable location to install the controller. Unplug the existing connectors to the vacuum solenoid valves, connect the included Y-cables and route the cables to the controller. Once installation is complete, you use one button on your remote transmitter to open the exhaust bypass valves and the other button to close the valves and return control to the car ... and, you also have the ability to configure a manual on/off switch that you can mount inside your vehicle.

  • NOTE: Not all vehicles / models have a valved exhaust system. Ensure the vehicle has a valved exhaust system before ordering / installing the Forza Exhaust Controller.

    Ferrari

    • F355 *

    • 550 *

    • 575M *

    • 612

    • California - Normally Aspirated (not turbo-charged)

    • 599

    Alfa Romeo

    • Giulia Quadrifoglio *

    • Stelvio Quadrifoglio *

    Lamborghini

    • Gallardo - Requires adapter plugs included in price

    • Hurracan - Requires adapter plugs included in price

    • Aventador (not LP770 SVJ). Requires adapter plugs included in price. See Model B4-FP for LP770.

    Others

    • Aston Martin Vanquish - Requires adapter plugs included in price

    • Audi RS4 / R8 - Requires adapter plugs included in price

    • Lotus (models with vacuum activated exhaust valves) * Requires adapter plugs included in price

    • Maserati GC / GT / Quattroporte

    • Volkswagen Golf R with vacuum operated valved exhaust - Requires adapter plugs included in price

    Contact us for compatibility with other vehicles not listed above.

    * Note: Controllers for these vehicles only operate as two-way controllers.

    Normal Mode: Car's ECU manages valves.

    Always Open Mode

  • All Forza exhaust controller have the following specifications:

    • Completely self contained controller box.

    • User configuration to use either the remote control key fob or a manual on/off switch.

    • Approved by FCC, CE and all international governing bodies.

    • Always Closed option can be used to keep the valves closed at all times.

    • All internal components integrated on Printed Circuit Board for higher reliability.

    • No Check Engine Lights (CEL) or Diagnostic Trouble Codes (DTC).

    • Cables assembled using water and oil resistant flexible cord - 18 AWG stranded Class K copper conductors per ASTM B-174. Rated SJEEOW for severe outdoor service with TPE insulation rated to 105° C. Type SJEOOW cords are ideal for flex applications in harsh high temperature environments where highest degree for water and oil resistance and extended service life are essential.

    • All electrical cables use weatherproof connectors.

    • High-gain antenna for improved remote control performance.

    • Includes full installation instructions.

    • Includes two remote control transmitters ... additional transmitters available.

    • Remote control can be programmed to newer versions of HomeLink (version 5 and higher) that is integrated into many cars. Older versions of HomeLink (earlier than 2013) will not support the 433MHz frequency of the remote.

    • Controller module with two remotes. Extra remotes available.

    • One 120 cm connection Y-cable.

    • One 120 cm extension cable included for some vehicles (not shown in photo).

    • Adapter plugs for those vehicles requiring them.

    • Two strips 3M Dual Lock Reclosable Fasteners.

    • Full installation instructions.

Installation Instructions