Eventuri carbon intake system EVE-ST38V8S-CF-INT Audi 8V RS3 Gen 2 / TTRS 8S for Daza and Dwna engines

The intake pipe has an internal diameter of 103mm or just over 4" and features a smooth curve from the filter housing to the turbo inlet. The filter itself has been designed specifically for this intake and has a massive external diameter of 210mm or 8.3" with a filtration surface area of over 130,000mm^2. The patented venturi housing has been designed to provide the maximum internal volume possible for the space available in the RS3 engine bay and provides laminar flow to the turbo pipe. Finally, the ducting seals the filter opening on the front blanking panel but is not limited to just the stock inlet feed. We raised the front of the duct to create an extra opening behind the hood that equates to an extra 7" diameter hole to draw intake from. The resulting system has the ability to flow 840 CFM at 28" H2O while keeping intake temperatures to a minimum with the sealed design.

The Eventuri Difference

Testing on the Bench

We conducted flow tests using a Superflow SF-1020 to measure the maximum possible flow rate at a pressure drop of 28” H2O. The tests were performed on the same day under controlled conditions using the same test jig for each system. We tested our complete intake system against the stock airbox system. The results show how restrictive the stock airbox is, which we were able to improve by up to 58% in maximum possible flow. It is important to note that this has been achieved with a sealed intake system, so intake temperatures will also be kept to a minimum.

Our Stage 3 intake has been tested by various reputable tuners globally who have built high power RS3/TTRS projects for road and track use. The first set of results come from BR Performance Netherlands who tested our system on a TTRS fitted with a TTE700 hybrid turbo. The tests were performed on the same day consecutively with the hood closed. They tested the stock airbox against our stage 3 intake and also with the addition of our 4" turbo inlet pipe, which is an add-on product, details can be found on our Audi product page.

Dyno Results Summary:

• Stock airbox with inlet stock turbo modified for TTE700 = 576.5 HP
• Eventiu Stage 3 intake with stock turbo inlet modified for TTE700 = 606.5 HP
• Eventiu Stage 3 intake with Eventuri turbo inlet for TTE700 = 620.8 HP

Our Stage 3 intake has also been tested on full frame turbo builds that have pushed the limits of the DAZA engine. Recent testing by Eurocharged Canada used our stage 3 intake to achieve 1010whp, which further demonstrates the flow capability of the Eventuri system. During testing, Eurocharged tuners commented that they were able to get more power at a lower boost setting using our stage 3 intake than with other systems they had used. Their RS3 has already achieved a 9.1-second quarter-mile pass with a terminal speed of 160 mph and they are well-positioned to dip under 9 seconds soon.

The gains come from a combination of reasons:

1) Sealed system keeps IATs low: The RS3's engine bay can absorb heat very quickly, so an open cone filter will cause IATs to rise, resulting in a loss of performance.

2) The venturi housing provides a smooth transition from the filter to the intake tubes, both of which are matched with a 103mm internal diameter. This helps hybrid and full-frame turbo setups run more efficiently.

3) The entire system is built in pure pre-impregnated carbon fiber, which has excellent heat insulation and smooth internal surfaces, unlike fiberglass which has sharp resin lines.

The Eventuri RS3 8V / TTRS 8S intake system is made up of a series of components designed to perform a specific purpose and manufactured to the highest standards. We use 100% pre-preg carbon fibre with no fibreglass, which means we can achieve a smooth internal surface to maintain a smoother airflow. Here are the details for each component and the design ethos behind them:

Each intake system consists of:

• Patented carbon fiber venturi filter housing with 103mm outlet
• Dry cone filter high flow custom made
• Carbon Fiber Inlet Duct
• 103mm ID Carbon Fiber Tube
• OPF Vent Adapter (DWNA)
• Gold Reflective Back Heat Shield
• Laser Cut Stainless Steel Brackets
• Carbon Fiber Vent Tube
• 103mm ID Carbon Fiber Tube
• OPF Vent Adapter (DWNA)
• Gold Reflective Back Heat Shield
• Laser Cut Stainless Steel Brackets
• 103mm ID Carbon Fiber Tube ... silicone
• Silicone Joints & Reducers

The Stage 3 filter housing consists of a custom-built high-flow filter, an aluminum canopy, laser-cut brackets and the carbon pod itself. The carbon pod wraps around the reverse-mounted filter and gently shapes the airflow all the way to the intake tubes. This gentle reduction in cross-sectional area mimics the Venturi effect where the airflow accelerates while maintaining laminar conditions. It can be thought of as a large velocity stack - below is a diagram showing how our patented design compares to a regular intake system. Further details can be read on the Technology page. Bespoke Stage 3 Conical Filter To achieve the highest possible flow rate, we had to redesign our Stage 2 filter and increase the dimensions as much as possible within the RS3 engine bay area. The resulting filter has an outside diameter of 210mm or 8.3" and when tested with the carbon housing alone is capable of flowing up to 940 CFM at 28" H2O. The filter media is ISO tested to ensure the filtration is up to OEM standards and is also dry. The filter is constructed with our signature flow cones to aid in the Venturi housing principle. Carbon Fiber Intake Duct The duct directs ambient air from the trim panel area into the filter housing. It fits inside the OEM duct system and transforms seamlessly into the circular shape of the filter housing. To ensure a good seal against engine bay heat, it also has a flexible rubber lip around the opening that presses against the filter housings creating the desired seal but allowing the housing to move with the engine. Since it was designed to support high horsepower builds, we found that the stock openings in the end panel could cause restriction under high flow demands. So we raised the top surface of the duct and created an opening above the end panel that could draw cold air from behind the closed hood. This extra opening equates to a hole over 7" in diameter and completely de-restricts the stock cold air supply. The Stage 3 duct was designed to have the greatest internal volume possible within the given engine bay geometry. This ensures that the filter housing is able to draw with the least restriction. We also made sure that the Stage 3 duct is compatible with larger aftermarket throttle bodies. Carbon Fiber Intake Pipe The intake pipe is made from 100% pre-preg carbon fibre and therefore, as mentioned, the internal surface is smooth and the carbon weave is visible. The stage 3 pipe has an internal diameter of 103mm or 4" and has a smooth bend to minimize pressure drop. It channels the airflow from the venturi housing to the turbo inlet. The smooth bend geometry ensures that laminar flow is maintained from the filters to the outlets. Heat shield

Due to the intense heat generated by the turbo, we designed a heat shield to protect the carbon tube. The shield is powder coated black but has a gold reflective layer on the base which deflects radiation heat away from the turbo and catalytic converter. It has a stainless steel brace to provide rigidity and curves around the back of the pipe to deflect convective heat. Note: This shield may not fit some full frame turbo systems with a different exhaust manifold. OPF adapter (DWNA)

We have 2 separate stage 3 intake systems, one fits the DAZA engine and the other fits the fits the new 2019 DWNA engine using an adapter and custom breather tube.Check the your engine to ensure you order the correct intake for your car.