Temporary Solution: Bad FFB CSW in GT6
Guys, I found the (temp) fix for our GT6 FFB issue.
What you need to do is flash back your CSW to Firmware v32.
Firmwares:
http://eu.fanatec.com/RacingWheels/ClubSportWheelBaseEU
The following difference between firmware v32 and v37 are the key to this fix.
Firmware 32: Emulation of Logitech G25 in PS3 Mode (no working rev lights (G25 didn't have any))
Firmware 37: Emulation of Logitech G27 in PS3 Mode (with working rev lights)
So what this means is that basically the G25 works fine and has a working Simulation FFB mode in GT6, while the G27 users have a messed up Simulation FFB mode in GT6.
This means that when you flash back you loose the rev lights, but I shift on hear or the on screen light instead myself. So I rather have a working FFB system instead so I can enjoy the game.
So all you got to do is download the firmware from the Fanatec site, follow the documented instructions included in the ZIP archive.
Make sure that after you rebooted your wheel you...
a) Reset your profile by holding down the tuning menu button while S_1 is displayed
b) Recalibrate the center of the wheel by putting the wheel in the center and hitting both thumb sticks while S_1 is being displayed
c) Recalibrate your H-shifter
d) Please don't forget to enjoy GT6
Personally I initially used Simulation, with Powersteering, Strength 10 in game and on the wheel FOR 100. Which equals to about the same feel I had with the T500, though I feel that the T500 is slightly sharper/spiky'er on the curb rumble in general (so not game related, but device firmware related).
Edit: Decided to go to Simulation, no Powersteering, Strength 8 instead. With powersteering the wheel goes silly light and strength 10 felt like it was clipping from the game. Better to leave some room in the game and adjust on the wheel instead if desired.
Anyways... happy driving guys.