Moza R5 Bundle settings for FH6 that worked for me — should translate to R3/R9 or any other DD wheel.
When I first booted FH6 with my R5 Bundle, it was nearly undriveable — couldn't get out of the driveway without spinning, the slightest input sent the car sideways, and bumps from AI would throw me completely off. Felt nothing like what a DD wheel should feel like.
Spent a lot of time going back and forth between PitHouse and FH6's advanced FFB settings until it finally clicked.
Please update Pithouse to 1.3.9 first.
I put the full settings in a video with gameplay across tarmac, dirt, and rally so you can actually see how the wheel responds.
https://www.youtube.com/watch?v=jISPlehkek4
If you're on an R3 or R9 (or any other DD wheel), the Max Output is the main thing to adjust — set it to whatever feels right for your wheelbase's torque range. Alternatively, if you'd rather not touch PitHouse, you can dial the in-game Force Feedback Scale up or down to taste instead.
Still learning myself, but it went from night-and-day compared to out of the box. Hope it helps someone. Also, please let me know how it works for you.