Carbon intake system | fits Audi RS4/RS5 (B9/8W/F5) 450hp | 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 Audi B9 RS4/RS5 Eventuri intake system is designed to give the turbo a less restrictive airflow while maintaining low inlet temperatures. The RS5/RS4 engine bay is very prone to heat build-up, so simply using an open filter system would result in better airflow at higher inlet temperatures. That's why we've completely redesigned the airflow from the turbo inlet to the front grille with a highly efficient sealed system. The standard restrictive airbox and flexible plastic inlet pipe have been replaced by our patented Venturi filter housing and a duct system with smooth transitions. The convoluted fabric inlet pipe is replaced by our Venturi housing and integrated full carbon pipe, resulting in a smoother airflow as it enters the turbo inlet pipe. The resulting performance gains and aesthetics are industry leading for this platform.

Available with or without optional real carbon fibre air intake.

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.

Included components:
Patented carbon fibre venturi housing with integrated pipe
High flow filter
Generation 2 carbon fibre main air duct with expanding seal
Carbon secondary air inlet
Carbon front air baffle
Laser-cut stainless steel mounting brackets
CNC machined mounting studs
Carbon intake housing construction

The filter housing consists of our customised Generation 2 filter, the carbon housing and the integrated pipe. The carbon housing encloses the rear-mounted filter and gently moulds the airflow downwards to the turbo tube, which corresponds in diameter to the turbo inlet. This is a key feature of the intake concept, where we have eliminated the requirement for a smooth transition to a coiled rubber hose between the intake and the engine. The filter housing and integrated pipe extend to the standard turbo pipe and by mounting to the engine, the entire filter housing moves with the engine. As the engine and filter housing moves under acceleration, it is able to maintain a seal to the duct through an expanding rubber profile fitted to the face of the duct.

This gentle reduction of the cross-sectional area creates the Venturi effect, in which the airflow is accelerated while maintaining laminar conditions. It can be considered as a large funnel. Nice to see in the diagram showing the comparison between our patent pending design and an OEM intake system. Our custom filters assist the airflow through the housings and allow for a smooth velocity profile as the airflow exits the housings.

Carbon main air duct with expanding sealThe duct directs ambient air from the scoop to the filter housing. It also creates a sealed volume of ambient air in front of the filter from which the system can draw air at any time. The duct has been designed to make optimum use of the volume available in the engine compartment. To ensure a good seal against engine compartment heat, the duct is also fitted with a flexible rubber rim around the openings, which presses against the filter housing and the OEM front duct, creating the desired seal while allowing the housing to move with the engine. To further improve airflow, we have an additional opening at the rear of the duct in the cold area of the engine bay.

Compatible vehicles: