LapSmith v0.1.5

What's new in v0.1.5

• The overlay can now be dragged from anywhere on it, not just the top corner.

LapSmith is a free, telemetry-driven tuning assistant for Forza Horizon 6. It reads the game's Data Out feed and your tyre Heat page and tells you the exact change to make next — one tweak per lap — until the car stops getting faster. You drive and type the values in yourself. It only reads telemetry and the screen; it never injects, automates input, or modifies the game.

This is the first public release. It's had a lot of my own testing but not much outside use yet, so if you hit something odd, please open an issue — that's a huge help.
Downloads

LapSmith-Setup.exe — installer with a Start-menu shortcut and uninstaller. Recommended.
LapSmith-0.1.3-portable.zip — no install; unzip anywhere and run LapSmith.exe.

First run

The app is unsigned, so the first time you run it Windows SmartScreen will say "Windows protected your PC." Click More info → Run anyway. If you use the portable zip, right-click it → Properties → Unblock before extracting.

It comes back clean on VirusTotal (0 of 66 engines):.: https://www.virustotal.com/gui/file/ecafbd0b36dfee852cd3ab6e716e92b9f69f3b3592fc120d26db70e327dc4679/detection

Setup

In Forza Horizon 6, turn on Settings → HUD and Gameplay → Data Out, set the IP to 127.0.0.1 and the port to 5607, and run the game borderless or fullscreen. Full quick-start is in the README.
Notes

LapSmith is free and always will be — nothing is locked behind a payment. If it saves you time and you want to chip in, there's an optional tip jar: https://ko-fi.com/ultimatekillcam

Not affiliated with or endorsed by Microsoft, Playground Games, or Turn 10. "Forza Horizon" is used only to describe what the tool works with.