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b4_with_remote_800.jpg

Model B4 Exhaust Controller

$430.00

For vehicles with two vacuum control valves. The Model B4 Controller is available as either a two-way exhaust controller or a three-way exhaust controller suitable for installation in harsh environments such as the engine bay of a high-performance sports car.  Normally aspirated vehicles can use the three-way controller whereas turbo-charged cars should not as it may be detrimental to the turbocharger. Depending on the application, the controller offers up to three modes of operation:

  • Normal Mode: The vehicle 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.  This mode should not be used with turbo-charged cars and by default will be disabled for turbo-charged vehicles.

If your vehicle is the Ferrari 488 (not the Pista) or the Ferrari 458, consider also getting the Forza Extension Cable as this provides additional installation flexibility when installing the controller module on the car. Click here for more information.

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.

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  • 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.

  • Ferrari's

    • 360

    • F430

    • 458 - Extra Extension Cable recommended

    • 488 GTB - Extra Extension Cable recommended (two-way model)

    • 812*

    • California t ... turbo-charged ... (two-way model)

    • F12

    • FF

    • GTC4Lusso V12 uses three-way controller

    • GTC4Lusso T V8 uses two-way controller

    Other Vehicles

    • The Model B4 Controller has two connectors and is designed for cars with two vacuum control valves. The Model B4 can be used in place of the Model B4A. But one of the connectors will remain unused. Contact us for compatibility with other vehicles not listed above.

    * 812 Disclaimer - Newer 812s may be equipped with Gasoline Particulate Filters (GPFs). The Forza controller may interfere with the management of the vehicle's GPF and under some circumstances, if the 812 has GPFs, a check engine light may occur when attempting to use the controller. To avoid these error conditions, an OBD CEL delete device, such as the Novitec Tectronic CEL Delete Device, may be desired. This is not issue if the vehicle does not have GPFs.

  • 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.

    • Two 120 cm connection Y-cable.

    • One 120 cm extension cable (not shown in photo)

    • Two strips 3M Dual Lock Reclosable Fasteners.

    • Full installation instructions.