""Xbox 360 Controller Emulator" allows your controller (gamepad, joystick, wheel, etc.) to function as an Xbox 360 controller. For example, it lets you play games such as "Grand Theft Auto" (GTA) or "Mafia II" using a Logitech Wheel."
Seems to be solving the opposite problem. Most PC players have Xbox controllers these days but TDU1 was released before they were ubiquitous. More information: https://community.pcgamingwiki.com/files/file/2265-xinput-plus-v415290/
Converting from XInput (Xbox controllers) to Direct Input (older standard) will probably work out better. Here is one option: https://github.com/briankendall/xboxToVJoy paired with https://www.vjoy.org/download-for-windows