Brilliant Red Manual B8 Audi S4 in for the full AWE Tuning exhaust & GIAC Stage 2 software treatment. Through the use of a smaller pulley, the AWE Tuning kit spins the Eaton Supercharger faster than stock, thus creating more boost pressure. To take advantage of the additional boost, GIAC Stage 2 software is installed on the S4. Both the pulley …
