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Restore Trueforce in iRacing when using MAIRA
Bring Logitech Trueforce haptics back to iRacing on a G PRO or RS50 while running Marvin's Awesome iRacing App (MAIRA).
The problem
iRacing ships native Logitech Trueforce. But to run MAIRA (Marvin's Awesome iRacing App) on a Logitech Trueforce wheel, MAIRA's own documentation tells you to turn iRacing's Trueforce off: you edit app.ini in your iRacing documents folder and change loadTrueForceAPI=1 to loadTrueForceAPI=0. Without that change MAIRA will not take over the wheel's force feedback.
The trade-off: you get MAIRA's reworked force feedback, but iRacing's Trueforce textural layer (the surface, kerb, lockup, and engine detail that plays through the wheel's Trueforce haptic motor) is now completely off. There is no way to keep both with MAIRA alone, because the same loadTrueForceAPI=0 switch that lets MAIRA run is the one that kills Trueforce.
What this plugin does about it
Trueforce For All drives the wheel's Logitech Trueforce haptic stream directly, independent of iRacing's Trueforce API. It synthesizes the textural layer from live telemetry and game audio instead of relying on the in-game Trueforce SDK that MAIRA forces you to disable.
That makes the two complementary:
They run at the same time on the same wheel without fighting, because they use different paths to it. This has been confirmed on hardware: loading MAIRA and iRacing with the plugin enabled, the reworked force feedback and the Trueforce haptic layer both came through together with no extra steps beyond the setup below.
Setup
You need the TF4ALL plugin installed and a supported wheel (Logitech G PRO or RS50). See the TF4ALL README for install steps and requirements.
Notes
See also
Bring Logitech Trueforce haptics back to iRacing on a G PRO or RS50 while running Marvin's Awesome iRacing App (MAIRA).
The problem
iRacing ships native Logitech Trueforce. But to run MAIRA (Marvin's Awesome iRacing App) on a Logitech Trueforce wheel, MAIRA's own documentation tells you to turn iRacing's Trueforce off: you edit app.ini in your iRacing documents folder and change loadTrueForceAPI=1 to loadTrueForceAPI=0. Without that change MAIRA will not take over the wheel's force feedback.
The trade-off: you get MAIRA's reworked force feedback, but iRacing's Trueforce textural layer (the surface, kerb, lockup, and engine detail that plays through the wheel's Trueforce haptic motor) is now completely off. There is no way to keep both with MAIRA alone, because the same loadTrueForceAPI=0 switch that lets MAIRA run is the one that kills Trueforce.
What this plugin does about it
Trueforce For All drives the wheel's Logitech Trueforce haptic stream directly, independent of iRacing's Trueforce API. It synthesizes the textural layer from live telemetry and game audio instead of relying on the in-game Trueforce SDK that MAIRA forces you to disable.
That makes the two complementary:
- MAIRA owns the main force feedback (cornering load, weight transfer, the steering forces it was built to rework).
- Trueforce For All adds the textural haptic layer back on the wheel's separate Trueforce stream: engine pulse, kerbs and road bumps, ABS, traction loss, gear shifts, collisions, plus an audio-derived channel.
They run at the same time on the same wheel without fighting, because they use different paths to it. This has been confirmed on hardware: loading MAIRA and iRacing with the plugin enabled, the reworked force feedback and the Trueforce haptic layer both came through together with no extra steps beyond the setup below.
Setup
You need the TF4ALL plugin installed and a supported wheel (Logitech G PRO or RS50). See the TF4ALL README for install steps and requirements.
- Configure MAIRA as normal. Follow MAIRA's own setup, including setting loadTrueForceAPI=0 in iRacing's app.ini. MAIRA's docs also recommend resetWhenFFBLost=0 so iRacing does not snatch force feedback back between sessions. Confirm MAIRA's force feedback works on its own first.
- Close Logitech G HUB. Both MAIRA and this plugin need G HUB closed: it claims the wheel's HID interface. Keep it closed for the whole session, not just at launch.
- Launch SimHub and start an iRacing session.
- Enable the plugin for iRacing. In the plugin's SimHub settings page, turn its master enable on. The choice is saved per game, so iRacing stays enabled from then on.
- Tune to taste. The on-wheel Trueforce intensity dial does not apply while the plugin is driving the Trueforce stream. Use the in-plugin Master Gain and per-effect gains instead.
Notes
- This is the one supported way to use this plugin with iRacing. Stock iRacing already has native Trueforce and the plugin deliberately stays out of its way; the MAIRA setup above is the exception, because MAIRA has already turned native Trueforce off.
- The FFB spike softener iRacing ships does not run when MAIRA owns the force feedback, but spike behaviour is then MAIRA's domain, not this plugin's.
- If you stop using MAIRA and set loadTrueForceAPI=1 again, disable this plugin for iRacing so it does not layer on top of iRacing's native Trueforce.
See also
