So i just bought VAG-COM for my b5 s4 and i cant find s4 on the list of cars and cant get the program to work properly, please help! thanks guys

 

Might want to contact them if you havent already. Depending on your year I know some ECUs lock themselves for some reason, not sure if it's the same for audis but I had to update my ECU on my '99 Suburban when I tuned it with EFI-Live because it initially rejected the software.

 

i just scrolled down to A4 B5 and it worked fine. it will detect the kind of engine you have and also your ECU#.