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Eventuri AUDI B9 - S4/S5 Black Carbon Intake...

The intake was tested on the road using a Vbox unit to record the acceleration from 60-130mph (also 100-200Km/h). Testing was carried out on the same stretch of road - again on the same day to keep variables minimum. Results show that with just the intake added, the acceleration times from 60-130mph reduced by almost 0.5 seconds which is a significant improvement at such speeds. This demonstrates that the gains measured on the Dyno are not represenatative of how the intake performs on the road when it has the correct flow conditions - on the road the intake shows a larger gain by the reduction in acceleration times as compared to the Dyno. 

Acceleration results summary: 
 

  • 60-130mph with Stock intake = 14.72 seconds
  • 60-130mph with Eventuri intake = 14.24 seconds
  • 100-200Km/h with Stock intake = 12.45 seconds
  • 100-200Km/h with Eventuri intake = 12.12 seconds



The gains are from a combination of reasons: 

1) The sealed system keeps IATs low - especially with the front air scoop which forces air into the system. 

2) The Venturi housing provides a smooth transition from the filter to the intake tube with no convoluted rubber section. This helps the turbo to run more efficiently by maintaining laminar flow in the inlet track. 

3) The entire system is constructed from pure pre-preg carbon fibre which is great at insulating from heat. 



The Eventuri B9 S4/S5 intake system consists of a number of components engineered to perform a specific purpose and fabricated to the highest of standards. Here are the details for each component and the design ethos behind them: 

Each intake system consists of: 
 

  • Carbon Fiber Venturi housing with intergated tube
  • High Flow Generation 2 Filter
  • Carbon Fiber Intake Duct
  • Carbon Fiber Front Scoop
  • High Quality Silicon Couplers and OEM Spec Hose Clamps
  • Laser Cut Stainless Steel Bracket Work
  • CNC Machined Mounting Stubs



Carbon Intake Housing Assembly 



The filter housing comprises of our bespoke generation 2 filter, the carbon pod and integrated tube. The carbon pod shrouds the reverse mounted filter and smoothly shapes the airflow down to the turbo tube which it matches in diameter to the turbo tube. This is a key feature of the intake design where we have removed the requirement for a convoluted rubber hose between the intake and the engine. The filter housing and integrated tube extends all the way to the stock turbo tube and by mounting this 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 the use of an expanding rubber extrusion which is mounted to the face of the duct (see below). 





This smooth reduction in cross sectional area invokes the Venturi effect where the airflow accelerates whilst maintaining laminar conditions. It can be thought of as a large velocity stack - below is a diagram to show the comparison between our patent pending design and a regular intake system. Our bespoke filters aid the airflow moving through the housings and allow for an even velocity profile as the airflow exits the housings. Further details can be read in the Technology and Filters pages. 



 



Carbon Fiber Intake Duct 



The duct channels ambient air from the scoop to the filter housing. It also creates a sealed volume of ambient air before the filter so that there is a ready supply which the filter can draw from. The duct has been designed to take maximum advantage of the volume available in the engine bay. In order to ensure a good seal against engine bay heat - the duct also has a flexible rubber edging around the openings which press against the filter housing and OEM front duct creating the desired seal yet allowing the housing to move with the engine. To further enhance the airflow we added a secondary opening at the rear of the duct in the cold region of the engine bay. This geometrically complex piece is a key part of our B9 S4/S5 design. 



Carbon Fiber Air Scoop 



The final carbon components in this system is the front scoop - essential to direct ambient air to the duct and then to the filter. 

The scoop was designed with a constant bend radius for maximum efficiency in directing the incoming air to the duct opening. It allows the inlet air temperatures to be as low as possible and increase the rate of drop in IATs after the system is heat soaked during a standstill. 





Custom Bracket Work 



To ensure a perfect fit we spend a lot of development time on the mounting hardware. Like all our intakes, the brackets are specifically designed for the application and for the B9 S4/S5 system, the brackets are laser cut from stainless steel and then powder coated for durability. The CNC machined mounts are then secured to th ebrackets and push into the stock rubber mounts which the stock airbox uses to secure to. This ensures our intake fits just like the OEM system. 

All the components come together in the engine bay to produce a genuine improvement in the driving experience as well as providing an incredible visual display of form and function in complete harmony. 

SKU EVE-B9S5-CF-INT
Brand Eventuri

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