Eventuri carbon intake system for Audi B9 RS4/RS5

Power increase: 13-17hp, 15-20ft-lbV box Acceleration: 60-130mph reduced by 0.5 secondsThe Audi B9 RS4/RS5 Eventuri intake system was developed to give the turbo less restrictive airflow while maintaining low intake temperatures. The RS5/RS4 engine compartment 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 intake to the front grille with a highly efficient, sealed system. The stock restrictive airbox and flexible plastic inlet pipe have been replaced with our patented venturi filter housing and smooth transition duct system. The serpentine cloth intake tube is replaced with our venturi body and integrated full carbon tube, resulting in smoother airflow as it enters the turbo intake tube. The resulting performance gains and aesthetics are industry-leading for this platform. Available with or without an optional real carbon air intake pushing air into the system. 2) The venturi body ensures a smooth transition from the filter to the intake manifold with no friction. This helps the turbo run more efficiently by maintaining laminar flow in the inlet section. 3) The entire system is made of pure pre-preg carbon fiber, which is excellent for thermal insulation.Components Included Patented carbon fiber venturi housing with integrated tube High flow filter Generation 2 carbon main air duct with expanding seal carbon Secondary air intake carbon Front air baffle Laser-cut stainless steel mounting brackets CNC-machined mounting spigotsCarbon intake housing ConstructionThe filter housing consists of our custom-made Generation 2 filter, the carbon housing and the integrated pipe. The carbon housing encloses the rear-mounted filter and gently shapes the airflow down to the turbo pipe, which has the same diameter as the turbo inlet. This is a key feature of the intake concept where we have eliminated the requirement for a smooth transition to a twisted rubber hose between the intake and engine. The filter housing and integral tube extend to the stock turbo tube and by being mounted on the engine, the entire filter housing moves with the engine. As the motor and filter housing moves under acceleration, it is able to maintain a seal to the duct by an expanding rubber tread mounted to the face of the duct. This gentle reduction in cross-sectional area creates the Venturi effect, where the Air flow is accelerated while maintaining laminar conditions. It can be viewed 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-designed filters assist airflow through the housings, allowing for an even velocity profile as the airflow exits the housings.Carbon main air duct with expanding sealThe duct directs ambient air from the vane to the filter housing. It also creates a sealed volume of ambient air in front of the filter for the system to draw air from at all times. The duct has been designed to make the best use of the volume available in the engine compartment. To ensure a good seal against engine compartment heat, the duct is additionally fitted with a flexible rubber rim around the ports which presses against the filter housing and OEM front duct creating the desired seal whilst allowing the housing to move with the engine. To further improve airflow, we added an extra opening at the back of the duct in the cold area of ​​the engine compartment.