DCCD stands for Driver Controlled Center Differential. In compatible Subaru STI transmissions, the system adjusts electronic center-differential clutch locking to help manage how torque is transferred between the front and rear axles. DCCD control does not replace the mechanical requirements of a properly matched drivetrain.

If the swapped transmission includes a DCCD center differential and you want its electronic locking function to work as intended, you need a compatible DCCD control solution. DCCDPRO offers automatic Spiider controllers and a driver-adjusted Manual DCCD controller. Compatibility depends on the transmission and installation.

Spiider uses throttle input and a G-sensor to automatically adjust DCCD locking, with manual control also available. Spiider Plus adds wheel-speed monitoring through compatible ABS sensor inputs to detect wheel-speed differences. Spiider Plus targets applications that need more specialized traction-control feedback.

Choose an automatic Spiider when you want the controller to respond to changing driving inputs while retaining manual adjustment. A Manual DCCD controller maintains the selected locking setting until you change it. The best choice depends on your drivetrain setup and intended use.

Standard Spiider configurations are designed to operate without the factory STI DCCD ECU or ABS control unit. The controller still needs correct power, ground, sensor input and DCCD wiring. Spiider Plus uses additional compatible wheel-speed sensor inputs for its wheel-slip monitoring function.

Normal operation does not require a laptop or smartphone app. Optional USB tuning is available for supported configurations when more detailed adjustment is needed. Always check the exact controller version and relevant installation instructions.

Compatibility depends on the transmission, center differential, vehicle wiring and installed sensors, not the vehicle name alone. Several Subaru platforms can use DCCDPRO products in suitable conversion setups. Confirm your chassis year, donor transmission year and installed components before choosing a controller.

DCCDPRO lists configurations for several newer WRX chassis, including MY15–21 and MY22+ applications. A standard WRX transmission is not automatically a DCCD-equipped STI transmission. A compatible swapped DCCD transmission and the correct controller configuration are required.

Some Spiider configurations support selected OEM STI switches and control interfaces, including older thumbwheel layouts and certain later controls. These options can depend on the version ordered, and some cannot be added afterward. Confirm the original control type before purchasing.

Compatible older STI clusters may support a dedicated DCCD display interface, while other installations use a separate LED indicator. Newer CAN-bus clusters are not interchangeable with older DCCD indicators. Match the cluster year and available interface before installing.

Some STI 6-speed transmissions do not supply the vehicle-speed signal expected by an older chassis, ECU or speedometer. DCCDPRO VSS converters can generate a compatible speed signal from a suitable ABS wheel-speed sensor. The correct converter depends on the installed sensor type.

VssPlus is intended for compatible 2-wire magnetic/reluctance ABS wheel-speed sensors. VSSPro2.0 is intended for compatible 3-wire Hall-effect wheel-speed sensors. Both provide a vehicle-speed-signal output, but they are not interchangeable. Identify the sensor before ordering.

Inspect the sensor connector and verify its pinout using the wiring diagram for your exact vehicle and model year. A 2-wire sensor is not the same as a 3-wire Hall-effect sensor. Do not choose based only on the year of the donor transmission.

For supported setups, a DCCDPRO converter can use an individual compatible wheel-speed sensor with its appropriate trigger or tone ring without the complete factory ABS control system performing the speed-signal conversion. The sensor must still be installed and operating correctly.

VssPlus and VSSPro2.0 product information describes adjustable speed calibration or wheel-size compensation. The correct setting depends on the wheel, tire and sensor arrangement. Use the instructions for the specific converter rather than assuming the default calibration is correct.

DCCDPRO provides product-specific manuals and downloads for its controllers, VSS products, wiring, OEM control interfaces and supported USB tuning software. Use the instructions matching your exact model and options, rather than a wiring diagram for a similar-looking product.

Installation involves vehicle-specific power, ground, sensor and differential wiring. An experienced automotive electrician or transmission-swap specialist is recommended. Incorrect connections can cause controller malfunction or damage. Follow the applicable DCCDPRO installation manual and vehicle service documentation.

Check the active auto/manual setting, adjustment position, parking-brake input, sensor calibration and connection to the DCCD solenoid against the product manual. The exact test process varies by controller version. Avoid testing unknown wires by trial and error.

Throttle position sensor wiring varies by chassis, ECU, engine and cable- or electronic-throttle setup. Confirm the correct signal with the wiring diagram for your specific vehicle and swap. A wire color from another model year is not a reliable substitute for a verified pinout.

On supported Spiider configurations, the optional Left Foot Braking feature changes controller behavior when the brake is applied above a defined throttle threshold. It is an application-specific option, not a standard feature to assume on every unit. Confirm availability and setup requirements for your controller.

AWDPro is an aftermarket AWD-control solution for selected Subaru automatic-transmission applications, including supported 4EAT and 5EAT setups. It serves a different purpose from a Spiider controller used with a DCCD-equipped STI manual transmission. Confirm the exact transmission before purchasing.

The DCCDPRO range includes selected AWD-control solutions for Subaru Lineartronic CVT applications, Nissan/Infiniti vehicles and Mitsubishi Lancer Evolution ACD systems. Each product has specific vehicle and wiring requirements; compatibility cannot be assumed across all models.

FuelPro is a motorsport fuel-pump control product intended for selected upgraded or higher-current fuel-pump configurations. The correct arrangement depends on pump electrical demand, wiring and whether it will work alongside an OEM controller. Fuel-pump control does not replace proper fuel-system design or tuning.

DCCDPRO offers selected connectors and wiring accessories for compatible transmissions, DCCD switches, control interfaces and other supported installations. Match the connector type, model year and controller option to the components you have.

DCCDPRO states that its controller product pricing is displayed in US dollars (USD). Check the current product and checkout details for the final price, selected options and applicable charges.

Contact DCCDPRO by email at sales@dccdpro.com or phone at 613-366-5631. The business address is 6 Cyrus Court, Ottawa, Ontario, Canada. Include your vehicle year, donor transmission, controller model and a description of the issue when requesting support.

Some DCCDPRO product listings specify off-road use only. Confirm the restrictions on your specific product and follow the laws in your location. Professional installation and careful testing are recommended.