ok, these are the steps to setup emulator:
1) download x360ce (64bit if you have 64bit OS)
2) unpack & copy it into NFS Payback folder
3) create x360ce.ini file and paste my content from prev. message (you can change controller axis/button assignments later running emulator app)
4) run x360ce.exe (x360ce_x64.exe for 64bit OS)
open "Game settings" tab and turn on all checkboxes under XInput Files: (on the right) and then click "Apply/Sync. settings" button bellow (this should create all xinput*.dll in the game folder)
5) select your wheel in "Contoller settings" tab and adjust controller axis/button assignments in "Controller 1" tab
6) click "Save" button, close emulator app and run the game (your should hear some beep if all is correct)