Audi S4 1991 Original ECU File

Alpha Tuning Files For Audi S4 1991

If you need original ECU files or other reliable information about your Audi S4 1991, you are in the right place.

The information provided by Alpha Tuning Files is reliable and readily available, here to help you tune any Audi S4 1991 out there.

Below you will find all engine options for Audi S4 1991. Just click on the engine of your choice and you will see information about hardware and software numbers, ECU type and also where you can download original ECU file.