I have a Logitech Driving Force wheel and had issues initially with getting the force feedback working.
I notice the error log file was listing the force feedback cmdline parameters as = 0.
So I manually changed \config\supermodel.ini
; Force Feedback
ForceFeedback = 1
DirectInputConstForceMax=100
DirectInputSelfCenterMax=100
DirectInputVibrateMax=100
DirectInputFrictionMax=100
XInputConstForceThreshold=100
XInputConstForceMax=100
XInputVibrateMax=100
and also deleted a copy of Supermodel.ini from the \ base directory. (I had a copy there for some reason)
From my Logitech Panel I increase the FFB effect to 125+ and change the deadzone if you want and sent it to the tray.
And finally of course - you need to have the drive board rom files inside the respective zip files
Drive Board ROM
Daytona USA 2 Power Edition
Daytona USA 2 Battle on the Edge
- epr-20985.bin
Scud Race
Scud Race Plus
- epr-19338a.bin
Google these files if you can't find them.
I launched via command line and the FFB worked and is very strong.
I have tried this on both 32/64 Win7
Also I notice in one of the threads awhile ago about someone asking about the FFB effect in Scud/Daytona.
Daytona 2 and Scud both had collision FFB - when a car hits you or when you hit a wall/grass there is a strong effect/yolt.
Also Scud Race has FFB when you loose control of the car it swings left and right accordingly when you car has completely lost control.
Scud Race FFB effect on my machine is very close to the arcade - it might need some tweaking to perfect but it's definately there.
Also if you have a Logitech wheel make sure the Panel is loaded and send it to the tray.
Hope this helps