# EA SPORTS WRC ## Connection Method **UDP** — EA SPORTS WRC sends telemetry data over UDP using a JSON-configured telemetry system. * **Default IP**: `127.0.0.1` * **Default Port**: `20789` * **Update Rate**: Approximately 60 Hz ## Automatic Setup 1. Launch EA SPORTS WRC at least once, then exit the game. 2. Select **EA SPORTS WRC** as your source in DR Sim Manager. 3. Click the **Settings** icon (⚙) next to the source. 4. Click **Install WRC Plugin** — this will automatically: * Copy the `drsm.json` packet definition to the telemetry folder * Update the `config.json` with the correct entry * Find an available port if the default is in use 5. Restart EA SPORTS WRC. ## Manual Setup If you prefer to configure manually: 1. **Copy the Configuration File** Copy the `drsm.json` file from: ``` C:\Users\\AppData\Local\DRSimManager\Plugins\WRC\ ``` Paste it into: ``` C:\Users\\Documents\My Games\WRC\telemetry\udp\ ``` 2. **Edit the Config File** Open the `config.json` file located at: ``` C:\Users\\Documents\My Games\WRC\telemetry\ ``` Add the following entry to the bottom of the `"packets"` array: ```json { "structure": "drsm", "packet": "session_update", "ip": "127.0.0.1", "port": 20888, "frequencyHz": -1, "bEnabled": true } ``` **Note:** Ensure there is a comma `,` before this entry if it is not the first item in the `"packets"` array. 3. **Verify Setup** After starting WRC, check the `log.txt` file for any errors. This file is located at: ``` C:\Users\\Documents\My Games\WRC\telemetry\ ``` > **Note:** Replace `` with your actual Windows username. ## Available Telemetry EA SPORTS WRC provides excellent rally telemetry: * **Orientation**: Pitch, Roll, Yaw (calculated from vehicle direction vectors for high accuracy) * **Acceleration**: Full 3-axis acceleration (projected onto vehicle-local axes) * **Velocity**: Full 3-axis local velocity (including rear axle correction for yaw) * **Angular Velocity**: Pitch, Roll, Yaw rates (calculated from orientation deltas) * **Speed**: Vehicle speed * **RPM**: Engine RPM (current, max, and idle) * **Gear**: Current gear and maximum gears * **Suspension**: 4-wheel hub position and velocity (FL, FR, BL, BR) * **ABS**: Anti-lock braking indicator * **Stage Progress**: Current distance and total stage length * **Vehicle ID**: Mapped to specific real-world rally car names (over 100 vehicles identified) ### Telemetry Quality: ★★★★★ WRC provides comprehensive rally data. The orientation is calculated from forward and left direction vectors rather than simple Euler angles, providing more accurate rotation data especially during extreme car attitudes. ## Recommended Starting Settings Rally driving produces dramatic forces: * **Primary Cue Gain**: 50–80% * **Smoothing**: Medium * **Washout**: Medium to high — sustained pitch/roll on rough terrain * **Safety Limits**: Recommended for big jumps and crash landings ## Known Quirks * **Orientation from direction vectors**: WRC doesn't send Euler angles directly. DR Sim Manager calculates pitch, roll, and yaw from the vehicle's forward and left direction vectors, which provides more accurate rotation data. * **Rear axle velocity correction**: The lateral velocity is corrected for the rear axle position (1.25m behind center of gravity) to improve yaw feel accuracy. * **Vehicle name mapping**: WRC sends a numeric vehicle ID. DR Sim Manager maps this to the actual car name (e.g., ID 103 → "Ford Puma Rally1 HYBRID"). Over 100 vehicles are mapped. * **Packet deduplication**: Duplicate packets are detected and skipped using a unique packet ID. * **Port conflict detection**: The automatic installer checks if the default port is already in use (by another app or another WRC telemetry output) and can suggest alternative ports. * **Interpolation enabled**: Smooth motion is achieved through interpolation between 60 Hz data updates. ## Checking the WRC Telemetry Log If telemetry isn't working, check the WRC log file for errors: 1. Click the **Settings** icon next to the WRC source. 2. Click **Check WRC Telemetry Logs** to open the log file. 3. Look for errors related to packet definitions or UDP configuration. ## Troubleshooting ### No telemetry data 1. Verify the `drsm.json` file exists in `Documents\My Games\WRC\telemetry\udp\`. 2. Check that `config.json` contains the DRSM entry in the `"packets"` array. 3. Ensure proper JSON syntax (especially commas between array entries). 4. Make sure you are in a rally stage (not in menus or watching replays). 5. Check the WRC telemetry log file for errors. 6. Restart both WRC and DR Sim Manager. ### Port conflict with other telemetry apps * If you use other WRC telemetry apps (like SimHub), they may already be using the same port. The DRSM automatic installer detects this and can assign an alternative port. * You can manually change the port in both the WRC `config.json` and DR Sim Manager's source settings. ### Vehicle name shows as a number * If a vehicle's ID hasn't been mapped yet (e.g., new DLC cars), it will display the numeric ID. This is cosmetic only — motion works normally regardless. ### "config.json" or "telemetry" folder doesn't exist * Launch EA SPORTS WRC at least once and drive a stage. 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