I'm still testing out the native Fanatec settings, but have initially settled on the following configuration for iRacing:
SEN - Sensitivity - auto (1080) FFB - Force Feedback - 50 SHO - Shock/Vibration - default (not used by me) ABS - ABS - default (not used by me) FOR - Force Effect - 100 SPR - Spring Effect - 100 (not used by iRacing) DPR - Damper Effect - 100 (not used by iRacing) NDP - Natural Damper - 40 NFR - Natural Friction - 15 FEI - FFB Intensity - 60 APM - APM Mode - default
My initial review after ~20 hours of driving time mirrors what I've read from other's:
The range of the torque strength available is immense. The jump up from my trusty 5 year old G27 is as huge as you'd expect. As you can see from the settings I'm using above, I've got it dialed in to only use 30% of the available strength. In my opinion, the fidelity and immediacy of the feedback is the real benefit.