2001 Audi S4 Quattro AWD 4dr Sedan (2.7L 6cyl Turbo 5A)
I have had this car only a few months. Love spending every second in it. Sounds and handles great even in stock. This is the only car I've ever wanted, more than any BMW or Audi. The B5 S4 is truely a work of art and probably has the best engine ever made. Nothing compares to the 2.7TT when it comes time to do upgrades. There is so much potential with this car that no other audi except the A6 2.7tt can offer. This engine can handle 400awhp without making any kind of mechanical upgrades to rods or pistons.The Euro RS4 comes stock with k04s and 380hp on the same engine. When Audi made this car they tried everything they could to limit this engine. Once you unleash it, you wont be dissapointed.
The turbos of course. The sound they make when spooling up. The Bose speakers sound great. The shifting is smooth with the 6-speed tranny.
Better made throttle body boot, maybe bring back the twin turbo instead of a supercharger in the new 09 S4. Some stock K04's would be the best ever. 18inch RS4 rims need to be standard! Better and louder exhaust system from UUC or AWE should be standard also.
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