Audi s4 engine modifications

Audi S4 (B8) Modifications (Charlotte, NC)

ECS Tuning: APR 3.0 TFSI Stage 2+ Supercharger Pulley Upgrade Kit DIY

Modified B8.5 Audi S4 Review - 500HP 6MT APR Ultracharged

B8 S4 (STAGE 1) IS IT WORTH IT?

Audi S4 Stock Vs. Audi S4 with APR Chip

EVERY AUDI B8 NEEDS THESE MODS!!!

Modified B8.5 S4 Mod List/Walkaround!

Viciously Tuned 400 HP Audi S4 | Farewell to the Iconic 4.2L V8

5 Easy & Cheap Mods for your B8/B8.5 S4!

EVERY Audi Needs This Simple $75 MOD!!