Performance Gain (RS3 with Hybrid Turbo): Range increase of 14-20 HP, 30-35 ft-lbs at 24"" H2O: 42% increase over stock (using stock flange)
Fitment for RS3 8V Gen 2, 8Y RS3, F3 RSQ3 and TTRS 8S left and right hand drive. Finished in raw carbon, without clear varnish.
Optional Turbo Flanges available for the most popular hybrid turbos.
Introducing a world first: an all-carbon RS3/TTRS turbo inlet elbow. We""ve invested months of intense research and development into developing an entryway that leaves no room for compromise. VOLUME – FLOW QUALITY – TEMPERATURE are the 3 main design criteria that we tried to satisfy.
1) VOLUME: inlet diameters - Eventuri 103 mm: stock 72 mm. Outlet Diameters - Eventuri 74mm: Stock 56.4mm. Clearly with significantly larger internal diameter dimensions, the Eventuri elbow encapsulates a much larger internal volume that limits the flow path to the turbo.
2) FLOW QUALITY: Just having a large internal volume is no good unless the flow path also allows smooth airflow to the turbo. By using high temperature prepreg carbon fiber we were able to achieve a smooth internal surface. In contrast, the stock elbows and other aftermarket elbows are all made of cast aluminum that ends in a textured inner surface. This, combined with the smooth curvature of the elbow, results in a flow path that minimizes turbulence.
3) TEMPERATURE: The final criterion was to minimize heat conduction in the airflow. The stock inlet is directly connected to the turbo and therefore immediately conducts heat like the turbo coils. Our system uses a machined flange that connects to the turbo and then a silicone coupler with an integrated thermal spacer to prevent the carbon elbow from having direct contact with the turbo. This barrier, combined with the low thermal conductivity of the carbon fiber thickness, means that less heat is transferred to the airflow.
Flow Bench Tests
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 elbow. The results show how restrictive the stock elbow is, which we were able to improve from 42% using the stock flange up to 58% in the maximum possible flow rate using the larger GTX flange. Since the right-hand drive version requires space for the brake fluid reservoir, we added a notch on the side which reduces the pipe volume but still maintains a significant increase in flow rate over stock with a 52% increase over stock using the GTX flange. The first set of results comes from BR Performance Netherlands who tested our system on a TTRS equipped with a TTE700 hybrid turbo. The tests were performed on the same day one after the other with the hood closed. They tested the stock airbox against our stage 3 intake with the stock elbow and then added our elbow for comparison.
Summary of dynamic test results:
Stock airbox with modified stock turbo inlet for TTE700 = 576.5 HP
Eventuri Stage 3 intake with modified stock turbo inlet for TTE700 = 606.5 HP
Eventuri Stage 3 intake with Eventuri Turbo inlet for TTE700 = 620.8 HP
Product code:
EVE-TRB8V8S-LHD-NIL : Audi RS3 / TTRS Gen 2 LHD Flangeless Carbon Turbo Inlet
EVE-TRB8V8S-FLG-STK : Stock turbo flange for RS3/TTRS carbon turbo inlet
EVE-TRB8V8S-FLG-TTE : TTE700/625 Turbo Flange for RS3/TTRS Carbon Turbo Inlet
The Eventuri RS3 8V / TTRS 8S Turbo Inlet is made from high temperature prepreg carbon fiber and comes with a number of other components designed to serve a specific purpose and manufactured to the highest standards.
Fitment is available for right-hand drive and left-hand drive vehicles. The inlet is designed to fit our Stage 2 and Stage 3 RS3 8V / TTRS 8S intake systems.
Here are the details of each component and the design ethos behind them:
Each entry system consists of:
High temperature carbon inlet elbow - Specific for right and left hand drive
CNC Machined Turbo Flanges: Optional Choices
Silicone couplers with oil resistant coating
Marine grade stainless steel hose clamps
Carbon Fiber Inlet Elbow
Our Turbo inlet provides a smooth flow path from the 103mm diameter inlet to the 74mm outlet to the turbo flange. We designed the shape with a continuous curvature and maximized internal volume without negatively affecting airflow. The inlet is finished in raw carbon, so it has no clear coat, which would not be able to handle the heat generated by the turbo and exhaust manifold. The carbon structure allows us to keep the internal flow surface smooth, which helps reduce surface friction and, in turn, allows the airflow to move more easily. We ensure strength and rigidity by maintaining a 2mm wall thickness throughout the part. Finally, for greater protection, a heat-reflective layer is applied where the pipe crosses the exhaust manifold. This reduces the radiant heat absorbed by the tube. The advantage of using carbon fiber over the traditionally used die-cast aluminum is mainly due to the thermal conductivity and ability to keep the interior smooth. The following table summarizes the benefits.
Minimizing heat absorption
When the RS3/TTRS accelerates, the turbo generates intense heat as it spools up. Since the face of the turbo is directly connected to our CNC machined flange, we designed a silicon coupler that also acts as a thermal barrier between the carbon tube and the metal flange. Internally the silicon has a spacer that separates the carbon and metal surfaces. This reduces conductive heat transfer and therefore allows the power to remain more constant as the input does not heat up as quickly as the stock input does.
CNC Machined Turbo Flanges
We supply a choice of turbo flanges which are all CNC machined from aircraft grade aluminum and anodised. We will also be adding more flanges for the new hybrid turbos coming to market.