Intake system Carbon | fits Audi S4/S5 (B9/8W/F5) 354hp | Eventuri

Facts:
Power increase: 13-17PS, 15-20ft-lbV box
Acceleration: 60-130mph reduced by 0.5 seconds
Material: Carbon fibre
Manufacturer: Eventuri
Expertise: without

The intake for the Audi B9 S4/S5 from Eventuri has been developed to give the turbo a less restrictive airflow while maintaining low inlet temperatures. The S5/S4 engine bay heats up very quickly, so an open system would result in better airflow but at higher inlet temperatures. Therefore, the airflow path from the front grille to the turbo inlet has been completely redesigned with a highly efficient, sealed system. The restrictive OEM airbox and the flexible plastic pipe have been replaced by a Venturi filter housing and a duct system with smooth transitions.
In addition, by removing the pleated OEM pipe and replacing the filter with our patented one-piece venturi housing and rigid pipe, the airflow is much smoother as it enters the turbo inlet. The resulting increase in performance and aesthetics are ground-breaking innovations for this platform.

The Eventuri difference
The B9 S4/S5 Eventuri system uses our patent-pending carbon fibre housings with our bespoke Gen 2 filter, providing an aerodynamically efficient airflow path from the filter to the inlets. Not just another filter with a heat shield, but a unique design that creates the Venturi effect. The intake was VBOX tested on the road to record acceleration from 60-130mph (and 100-200Km/h). The tests were carried out on the same track - and on the same day to minimise the variables. The results show that acceleration times from 60-130mph have reduced by almost 0.5 seconds, which is a significant improvement at such speeds. This shows that the gains measured on the dyno are not representative of how the intake behaves on the road when it has the correct flow conditions - on the road the intake shows a greater gain by reducing acceleration times compared to the dyno.

Summary of acceleration results:
60-130mph with original airbox = 14.72 seconds
60-130mph with Eventuri intake = 14.24 seconds
100-200mph with original airbox = 12.45 seconds
100-200mph with Eventuri intake = 12.12 seconds

The improvements result from a combination of reasons:
1) The closed system keeps IATs low - especially with the front air scoop forcing air into the system.
2) The venturi housing provides a smooth transition from the filter to the intake manifold without friction. This helps the turbo to run more efficiently by maintaining laminar flow in the inlet section.
3) The entire system is made of pure pre-preg carbon fibre, which is excellent for thermal insulation.

Compatible vehicles: