Audi S4 / S5 (B9) Performance Parts, Mods, and Upgrades
The Audi S4 and S5 B9 generation completed one of the most consequential powertrain evolutions in the S4's history. The B8's supercharged 3.0 TFSI V6 gave way to a twin-scroll turbocharged 3.0 TFSI inline-six producing 349 horsepower, representing a deliberate shift in engineering philosophy from the mechanical immediacy of positive displacement toward the efficiency and sustained top-end performance of forced induction. The result is a platform with a broader operating range than any previous S4 or S5, capable of genuine grand touring refinement while retaining the composure and traction to embarrass far more specialized machinery. At IND Distribution, our S4 and S5 B9 catalog is built around the turbocharged inline-six's specific characteristics, sourcing components that work with the engine's architecture to extract more from everything the B9 platform already does exceptionally well.
The centerpiece of our B9 performance offering is the Eventuri Audi B9 S4 and S5 Black Carbon Intake System. Developed specifically for the B9's engine bay geometry, this system replaces the factory airbox and intake ducting with a precision-formed black carbon fiber venturi housing designed to increase charge air velocity and reduce turbulence ahead of the turbocharger inlet. On a twin-scroll turbo application, where the separation of exhaust pulses between the scroll entries depends on precise and consistent airflow, the Eventuri's improvement in intake efficiency translates directly into sharper spool characteristics and a more linear power delivery through the mid-range. The system is also visually striking in the B9's engine bay, and we stock both the compatible Eventuri Air Filter Cleaning Kit and Type B replacement filter to support it through its full service life.
Beyond the intake, the B9's interior and exterior present several well-considered upgrade opportunities. The JQ Werks and MadTrace GEN 2 Audi Clubsport Magnetic Shift Paddle Set brings a more mechanical, deliberate shift action to the B9's S tronic transmission, replacing the factory paddle mechanism with precision magnetic engagement that transforms how the driver interacts with the gearbox under performance conditions. On the exterior, the Acexxon B9 A5 and S5 Pre-Facelift Rear Reflector Insert Set in Honeycomb finish is a platform-specific upgrade for pre-2019 models, eliminating the factory red reflectors in favor of a cleaner, more purposeful rear aesthetic that suits the B9's sharper body language. The Acexxon Universal and Heavy Duty Front Lip Protectors complete the exterior package, safeguarding the front splitter in both standard and heavy-duty configurations.
For the B9 owner who demands full operational visibility into the turbocharged inline-six, the CANchecked instrumentation ecosystem delivers a comprehensive data solution that integrates cleanly with the B9's existing architecture. The SWD32 Multi-Function Display, SLM08 Shiftlight Module, FLP01 oil and fuel pressure sensor, and VAG-compatible diagnosis and connection cables provide real-time monitoring across the parameters most relevant to a turbocharged performance engine under sustained load. At IND Distribution, our S4 and S5 B9 catalog reflects the same philosophy that guides our entire European offering: every product is selected because it genuinely advances the platform, and every recommendation is backed by the technical knowledge to ensure it does.
