Stage 3 Audi S4 vs Stock C6 Z06
Z06 vs S4 Highway Pulls 60-125
K03 S4 vs K04 S4
my chipped and stock otherwise k03 s4 vs a k04 s4 with a 10secs4 tune.
Audi s4 vs Bmw m3
Audi vs Bmw lets see who is the muscle of Germany filmed on closed road in mexico