forza.js

A simple JavaScript library for receiving Forza telemetry data Compatible with Forza Motorsport 7 and Forza Horizon 4 and 5

Usage

1. Install the module with npm install MatthewCash/forza.js
2. Enable "Data Out" in Forza Settings
   • This is usually near the bottom of HUD AND GAMEPLAY
   • Set IP adress to 127.0.0.1 and port to

     Game	Port
     Forza Motorsport 7	9917
     Forza Horizon 4	9924
     Forza Horizon 5	9925

3. If you are using Forza from the Windows Store follow the instructions in Network Isolation
4. Import the module in your code with

import forza from 'forza.js';

5. Instantiate the Forza class

const forza = new Forza();

6. Load games and start UDP sockets

await forza.loadGames();
forza.startAllGameSockets();

Now you can use the Forza class to receive telemetry data

Get the latest telemetry data

const telemetry = await forza.getTelemetry();

Listen for telemetry data

forza.on('telemetry', data => {
    // Do something with data
    console.log(data);
});

Network Isolation

Windows store apps prevent localhost connections by default for "security" This will need to be disabled for this program to work

Thankfully it can be done on a per-app basis

Steam/Linux players will not have to do this

Run this corresponding powershell command for your game

Forza Motorsport 7:

CheckNetIsolation.exe LoopbackExempt -a -n="microsoft.apollobasegame_1.174.4791.2_x64__8wekyb3d8bbwe"

Forza Horizon 4:

CheckNetIsolation.exe LoopbackExempt -a -n="microsoft.sunrisebasegame_8wekyb3d8bbwe"

Forza Horizon 5:

CheckNetIsolation.exe LoopbackExempt -a -n="microsoft.624F8B84B80_8wekyb3d8bbwe"