Logitech Trueforce-compatible haptics for any SimHub-supported game.
While official support for Trueforce has been steadily growing, there are still many major titles which are yet to receive support or will never get support. This plugin fills those gaps by allowing it to work everywhere SimHub does. Built on top of the wire protocol reverse-engineered by the mescon Linux driver project.
Status: Actively in development. The plugin is functional today; the default presets are still being tuned. Feedback welcome.
Note: My Reddit account was immediately banned after sharing this and all of my posts have been removed across several subreddits. If you find this useful, sharing it on social media (Reddit, Discord, Sim-Racing forums, YouTube, etc) helps other drivers find it. I've appealed the ban and have yet to hear back.
For the record on what this project is: Original Windows code built on top of a wire protocol reverse-engineered by the mescon Linux driver project from USB traffic. No Logitech source, firmware, or proprietary assets are used or redistributed. GPL-2.0, same as mescon's work. Logitech trademarks are acknowledged in the section below; this project is unaffiliated.
| Wheel | USB ID | Status |
|---|---|---|
| Logitech G PRO Racing Wheel (Xbox/PC) | 046D:C272 |
Full: Trueforce haptics + game FFB pass-through |
| Logitech G PRO Racing Wheel (PS/PC) | 046D:C268 |
Full: Trueforce haptics + game FFB pass-through |
| Logitech RS50 | 046D:C276 |
Full: Trueforce haptics + game FFB pass-through |
| Logitech G923 (PS/PC) | 046D:C266 |
Full: Trueforce haptics + game FFB pass-through |
| Logitech G923 (Xbox/PC) | 046D:C26D, 046D:C26E |
Full: Trueforce haptics + game FFB pass-through |
The G PRO and RS50 use byte-identical Trueforce packets, so the haptic layer works on both. The plugin keeps a game's normal force feedback alive by tapping it off the USB bus and mirroring it into the haptic stream. The tap resolves the wheel's HID++ force-feedback feature index automatically, so both the G PRO and the RS50 get Trueforce haptics and their native game force feedback at the same time.
The G923 was decoded from USB captures (Assetto Corsa Competizione and Forza Horizon 5). Its Trueforce haptic motor uses the same protocol as the G PRO. For non-Trueforce games the G923 exposes its force feedback on a different path than the G PRO and RS50 (a DirectInput-style report on a separate USB endpoint), which the plugin taps and mirrors into the haptic stream.
Both G923 variants are confirmed working by owners: Trueforce effects and in-game force feedback together. The PlayStation and Xbox variants deliver force feedback over different USB paths (the Xbox path was decoded from a community-submitted capture and added in 0.1.17); the plugin handles both. The G923 is a quieter gear-driven wheel than the G PRO and RS50, so if it feels light, raise master or Trueforce gain.
The plugin runs inside SimHub and drives the wheel's Trueforce haptic motor in real time. Everything rides on top of your real force feedback, which it preserves via FFB pass-through. It mixes:
-
FFB pass-through (the foundation). Driving the Trueforce motor would otherwise silence the game's own force feedback, so the plugin taps that signal off the USB bus and folds it back into the Trueforce stream. Your real cornering load, weight transfer and kerb forces keep coming through underneath every effect below, in any game whose force feedback uses standard HID++ (effectively all of them on these wheels).
-
Telemetry-derived effects synthesized from live game data.
- Engine pulse: rumble at the engine's firing pattern, derived from RPM and cylinder count (auto-detected per car when possible). Idle gives a gentle hum; higher RPM lifts both pitch and intensity.
- Gear shift: a short low-frequency thud whenever the gear changes.
- ABS click: configurable haptic when ABS engages.
- Pit limiter: configurable pulsing buzz while the limiter is engaged.
- Rev limiter: a hard buzz at the shift point and on the limiter, independent of the engine pulse. Fires at the car's real redline where the game reports one (with an optional early/late offset), otherwise at a percentage of the rev limit you set. On by default.
- DRS: short chirp on the rising edge when the wing opens, plus an optional sustained flutter while DRS stays active. Silent on games that don't expose the flag.
- Road bumps: triggered by vertical acceleration so curbs and rough terrain rumble through the wheel. On Forza, the per-tire surface-rumble and rumble-strip fields are read directly for a richer, more accurate continuous road feel on top of the heave channel.
- Traction loss: tire-screech haptics when grip breaks (wheelspin, lockup, drift). Read directly from per-wheel slip in games that expose it (AC); inferred on the SimHub universal path from wheel-vs-ground speed plus a yaw-rate / lateral-G discrepancy check.
- Collision: amplitude-scaled thud on impact, with a soft-knee curve so harder hits feel stronger without becoming unsafe, plus a refractory window so multi-frame crashes don't stutter.
- Airborne ducking: when the car leaves the ground, the chosen effects cut out so jumps feel weightless, then return on landing. Detected from wheel load / suspension (AC and the Forza Horizon games). On by default.
- Stationary spring: optional centering force so a parked or crawling car has some weight at the wheel instead of going limp, fading out as speed builds (AC and Forza Horizon; off by default).
-
Audio-derived effects: WASAPI loopback captures the game's audio output (engine, tire, impact sounds) and feeds it into the wheel as low-latency haptics. Lets you feel things the telemetry doesn't expose, and works even for games which do not output telemetry data since capture targets the game process directly.
All of it is configurable per-game, per-car, via SimHub's settings UI: master gain, individual effect tuning, sidechain ducking between continuous and transient effects, and savable preset library.
Some games (Assetto Corsa being the worst offender we've seen) deliver curb and collision FFB spikes wildly out of proportion to what's safe or comfortable. On a strong wheelbase they can ruin a racing line or cause real wrist strain over a session. iRacing has a built-in softener; most other games don't. The plugin taps the game's outgoing FFB on the USB bus and attenuates spikes only, so curbs land as confident pushes instead of yanks while sustained cornering load and weight transfer pass through untouched. Useful on its own, even with all our other effects turned off.
The easiest path is the bundled installer:
- Download
TrueforceForAll-Setup.exefrom the latest release. - Close SimHub if it's running.
- Run the installer. It detects SimHub, copies the plugin files into the SimHub install folder, and (if USBPcap isn't already installed) runs the bundled USBPcap setup automatically.
- Close Logitech G HUB (it claims the wheel's HID interface).
- Launch SimHub. The plugin auto-enables on first run.
The installer is conservative on uninstall: it removes our files but leaves SimHub, USBPcap, and shared dependencies (HidSharp, NAudio) alone, so other plugins that share those keep working.
- Windows 10 / 11
- SimHub
- A supported Logitech wheel (table above)
- USBPcap, bundled with our installer if you don't already have it. Used to mirror the game's existing FFB signal into the Trueforce stream so the two coexist.
- Logitech G HUB closed while playing (it claims the HID interface and blocks us from talking to the wheel)
A few titles are read directly from the game's own telemetry, at a much higher rate than SimHub's 60 Hz cap. That makes their effects sharper and more responsive, and it needs no SimHub license:
Assetto Corsa has a dedicated path: shared memory is read directly at AC's native 333 Hz physics rate (polled at 1 kHz so events are seen within 1 ms of being written). The higher rate makes curb collisions, road-bumps, traction-loss and other haptic effects noticeably sharper and more responsive than SimHub's 60 Hz feed can deliver.
Forza Horizon 4, 5 and 6 also have a direct UDP Data Out reader that picks up per-tire fields for the surface-texture, rumble strips, and curb collision effects. These games send this telemetry once per rendered frame, so it tracks your frame rate (often well above 60 Hz), giving more depth in surface detail effects than some other titles offer. All three are auto-detected from SimHub's game profile, so the only setup is pointing Forza's DATA OUT at the listener's IP and port.
Additional direct-read titles will be added over time.
Every other SimHub-supported game runs through SimHub's universal telemetry feed instead. The plugin works there without a SimHub license, but unlicensed that feed is capped at 10 Hz, which makes the effects feel coarse. A licensed copy of SimHub (a small one-time payment) lifts it to 60 Hz, a big step up in feel.
This plugin sits between the game and SimHub: the game sends telemetry to the plugin, and the plugin passes a copy to SimHub, so both work. Forza and F1 only send to one place, which is why the game must point at this plugin, not at SimHub. Anything SimHub drives (dashboards, ShakeIt bass shakers, a Buttkicker, arduino devices) keeps working through the relay. In the Forza (or F1) section of the plugin settings:
- In SimHub, open Games then the game and note the UDP port it uses. If SimHub has an "automatically configure" option for that game's data output, turn it off, or it will keep overwriting the setting you make in step 2.
- In the game's telemetry settings, set the data-out IP to
127.0.0.1and the data-out port to this plugin's listen port (the Port field in that section, default 5300). This must be a different number than SimHub's port from step 1. - Enable "Also forward to SimHub", set the forward host to
127.0.0.1and the forward port to SimHub's port from step 1. - Drive for a moment and check the "Forwarded:" line in that section. Once it shows packets, SimHub's dashboards and bass shakers are back.
The result is game → this plugin → SimHub, so haptics from this plugin
and everything SimHub drives both work at the same time.
iRacing ships native Trueforce, so this plugin normally stays out of its
way. The exception is Marvin's Awesome iRacing App (MAIRA): running
MAIRA on a Logitech wheel requires setting loadTrueForceAPI=0 in
iRacing's app.ini, which turns iRacing's Trueforce fully off. This
plugin restores the Trueforce textural haptics for MAIRA users, running
alongside MAIRA's force feedback without conflict. No MAIRA changes are
needed. Step-by-step setup is in
docs/iracing-maira-trueforce.md.
Some titles already ship Trueforce on PC, so the plugin defaults itself off for them. Switch off the game's native Trueforce and you can run the plugin instead, tuning the feel yourself rather than taking whatever the game hardcodes (and on Automobilista 2, adding Trueforce that was never really there).
The catch: a slider at 0 is not off. Many games keep the Trueforce API live even at 0, so the plugin fights a channel the game is still driving and the wheel whines. Only a real on/off switch or a config-file setting fully releases the wheel.
| Game | How to disable native Trueforce | Plugin takes over? |
|---|---|---|
| iRacing | app.ini loadTrueForceAPI=0 (see iRacing + MAIRA above) |
Yes |
| Dirt Rally 2.0 | In-game Trueforce on/off switch | Yes |
| GRID (2019) | In-game Trueforce on/off switch | Yes |
| Automobilista 2 | Steam launch option disableTF (try -disableTF if that fails) |
Likely, untested |
| Assetto Corsa Competizione | Slider only, no off switch found | No, stays live |
| Assetto Corsa EVO | Slider only, no off switch found | No, stays live |
| Assetto Corsa Rally | Slider only, no off switch found | No, stays live |
AMS2 is a special case: per Reiza's devs it loads the Logitech SDK but
never actually implements Trueforce, so it behaves like a non-Trueforce
game with the channel left live. The disableTF
launch option falls back to legacy mode and should let the plugin take
over, but I haven't confirmed it on hardware. (Steam launch options: right-
click the game, Properties, General, Launch Options.)
I don't own some of these titles, so this table grows from user reports. If you find an off switch or config setting for one of the ones still marked "no", or get the plugin working on a native-Trueforce game that isn't listed here at all, please open an issue and let me know.
On startup the plugin:
- Enumerates connected HID devices, finds the wheel's Trueforce interface
(
MI_02, vendor usage page0xFFFD). - Enumerates USBPcap interfaces and parses injected device descriptors to find which root hub the wheel is on and what USB address the OS assigned it this boot.
- Starts the FFB tap and Trueforce stream automatically.
If the wheel isn't detected (G HUB still running, USBPcap not installed, wheel unplugged) the plugin logs a clear status message and disables itself gracefully
- Logitech G HUB must stay closed the entire time the plugin is in use, not just at launch. G HUB claims the wheel's HID interface and blocks us from talking to it. If G HUB is opened mid-session, close it and reload the SimHub plugin to reattach.
- The Trueforce level dial on the wheel doesn't apply while this plugin is driving Trueforce. Once we take over the ep3 stream, the wheel's own Trueforce intensity scaling stops responding to the dial. Use the in-plugin Master Gain and per-effect Gain controls to set intensity instead.
- Validated on G PRO and RS50 + AC + Wreckfest 2 + FH5 + FH6 + iRacing with MAIRA so far. Other games should work but haven't been tested by us yet. Feedback welcome.
Which games does it work with? The audio-derived effects work in any game at all, since the plugin captures the game's audio directly with no SimHub support needed. Games that SimHub supports additionally get the telemetry-derived effects (engine pulse, gear shifts, ABS, and so on). Assetto Corsa and Forza Horizon 4/5/6 go further with a higher-fidelity direct path (see Per-game enhancements).
Do I need to pay for SimHub? SimHub itself is free, and the plugin works without a SimHub license. The difference is the telemetry rate: unlicensed, games the plugin doesn't read directly run at only 10 Hz, which makes the effects feel coarse. A licensed copy lifts that to 60 Hz, which is a big step up in feel. SimHub is cheap and well worth it. (Assetto Corsa and Forza Horizon 4/5/6 are read directly from the game, so they run at their full rate regardless of license.)
Is this anti-cheat safe? Yes. The plugin operates entirely outside the game. It never injects code, reads or modifies game memory, or hooks the game in any way. It only talks to the wheel over USB (via USBPcap), reads telemetry the game already broadcasts (SimHub, shared memory, or UDP), and captures game audio through Windows' own loopback. Switching off a game's native Trueforce is done by editing a config file or flipping an in-game setting before launch, never by touching the running game.
Will it change or replace my normal force feedback? No. The plugin preserves your existing force feedback and layers haptic effects on top of it. Your wheelbase's own FFB still comes through, with all your usual settings intact.
Why does it need USBPcap, and is that safe? USBPcap is an open-source USB capture driver. The plugin uses it to read the wheel's own force-feedback traffic off the USB bus so it can mirror that into the Trueforce stream (this is the FFB pass-through that keeps your normal force feedback alive). It only looks at the wheel's traffic, it's widely used and bundled with our installer, and you can uninstall it separately at any time.
Do I need Logitech G HUB? Some wheels need G HUB launched once to switch into PC mode and expose their full HID interfaces. If the wheel isn't detected, open G HUB once, let it recognize the wheel, then close it completely before launching SimHub. G HUB claims the wheel's HID interface, so it must stay closed while you play. The wheel can drop out of PC mode after a PC restart or when you unplug it, so you may need to repeat the open-once-then-close step after each reboot.
The effects feel weak or light. Raise Master Gain and the per-effect Gain in the plugin settings. The Trueforce dial on the wheel itself does nothing while the plugin is running, so all intensity is set in the plugin. The G923 is a quieter gear-driven wheel and usually needs more gain than the G PRO or RS50.
Can I use this in games that already support Trueforce? By default the plugin stays off for native-Trueforce titles, since the game already provides it. But you can switch off the game's native Trueforce and run the plugin instead, which lets you tune the feel yourself. See Games with native Trueforce for which titles allow this and how.
- Overtake.gg, Logitech's Trueforce Arrives Early in Forza Horizon 6 Thanks to Community-Made SimHub Plugin: Detailed news writeup of the plugin bringing Trueforce to Forza Horizon 6 at launch, ahead of any native support from the game.
- Armando Ramirez, Does Logitech TRUEFORCE Actually Matter in Forza Horizon 6?: The first video walkthrough of the plugin in Forza Horizon 6, including custom presets the creator tuned.
- Revasio, French installation tutorial on TikTok: A walkthrough of installing and setting up the plugin, narrated in French.
The wire protocol (init sequence and ep3 streaming format) was reverse-engineered by the mescon Linux driver project. This repo is the Windows-side glue on top of that: a SimHub plugin that opens the wheel, synthesizes the telemetry/audio-derived effects, handles per-game tuning, and runs the USBPcap-based FFB tap that mirrors the game's HID++ output into bytes 6-9 of the Trueforce ep3 stream.
GPL-2.0-only. See LICENSE.
The wire protocol and init sequence are derived from the mescon Linux driver project, also GPL-2.0.
- mescon/logitech-rs50-linux-driver: reverse-engineered the wheel's driver and wire protocol. This project would not exist without their work.
- USBPcap by Tomasz Mon: the kernel-mode USB filter that lets us tap the wheel's bus traffic for FFB pass-through.
- mdjarv/assettocorsasharedmemory: community reference for AC's shared-memory layout, used to validate our SPageFilePhysics field offsets.
- HidSharp: cross-platform HID library used for the control-side of wheel communication.
- NAudio: audio I/O library used for the per-process loopback capture pipeline.
- ManteoMax's Forza Horizon 5 spreadsheet: the canonical community catalog mapping Forza CarOrdinal to year/make/model and engine specs. Our FH5 lookup (engine cylinder / layout / electric detection plus auto-named per-car presets) is built from this data.
- SimHub: the host application. This plugin is unofficial and not affiliated with the SimHub project.
- Armando Ramirez: produced a video walkthrough of the plugin in Forza Horizon 6 and tuned his own presets for it.
- Revasio: produced a French-language installation tutorial on TikTok, helping French-speaking drivers get set up.
- Caleb Pearson: reported that the plugin was not working on the RS50, exported the TF4ALL logs that helped pinpoint the cause, and validated the fix on his hardware. Without his report the RS50 issue would have gone unnoticed. He also discovered and confirmed that the plugin brings Trueforce back to iRacing when running MAIRA.
- Svenmoor: tested the plugin against a range of native-Trueforce titles and mapped which ones have a true Trueforce off switch (so the plugin can take over cleanly) versus which only expose an intensity slider, which populated the "Games with native Trueforce" table above.
Logitech, Trueforce, G PRO, RS50, and G923 are trademarks of Logitech. This project is not affiliated with, endorsed by, or sponsored by Logitech.