Audi S4 B5 V2.4 1.46 Here

This mod is typically paired with larger aftermarket turbos (like RS4 K04s or bigger) to maximize top-end performance. 3. Performance Software (V1.46)

These software revisions optimize fuel delivery, ignition timing, and boost pressure.

While "1.46" is not a standard Audi part number, it most likely designates a specific from a tuner like Unitronic , GIAC , or 034Motorsport .

Features a 6-speed manual or 5-speed Tiptronic automatic, with Audi's signature Quattro all-wheel-drive system. 2. The "V2.4" Modification