Eventuri intake system for Audi RS6 & RS7 C8

Eventuri Intake System for Audi RS6 & RS7 C8:

Power Increase – Stage 1: 45-50hp, 49 ft-lbs

Stage 1 Acceleration 100-200km/h: Reduced by 0.6s

Power Increase – Stage 2: 60-80hp, 60-70 ft-lbs

The Audi C8 RS6 intake system is the result of extensive development, testing, and prototyping. Our goal was to address 2 main criteria: 1) Increased flow rate. 2) Smoother airflow. The first goal was achieved by utilizing all the limited space in the RS6 engine bay, which was severely restricted by the underside of the bonnet. Our solution was to completely redesign the entire airbox to maximize volume, enlarge the flow entry points, and create a more favorable filter angle to the turbos. Additionally, we dramatically increased the size of the turbo inlets by up to 85% when measuring the cross-sectional area at the openings. The second goal was achieved by developing an organically shaped system with a specially rounded panel filter to ensure that the airflow path contained no sharp corners, thus allowing for laminar flow. With smooth transitions from the filter to the turbo inlets, our intake minimizes turbulence generation and allows the turbos to operate more efficiently. We partnered with BMC to develop a custom filter element to ensure the filter area is as large as possible while maintaining clean airflow.

With all goals achieved, our C8 RS6 intake system delivers on all fronts and allows the turbos to generate boost more efficiently. This leads to improved throttle response and significant power gains, independently tested, which increase with higher states of tune. The measured power gains result from the complete system we developed, from the airbox base to the lid and the inlets.

Each intake system consists of:

• Carbon Fiber Airbox Base
• Carbon Fiber Airbox Lid
• Custom BMC Panel Filter
• Enlarged Turbo Inlets with CNC machined reinforcement
• Custom Silicone Hoses with OEM Specification Clamps
• Custom Hardware

Certification:

• with TÜV parts certificate.

Dyno Testing

Our intake has been independently tested both on the dyno and on the road. At higher tuning stages, the turbos require more air, and therefore the stock airbox becomes a greater restriction. Here are some results from reputable tuners who tested the intake.

STAGE 1 TESTING

Dyno testing was conducted by Awesome GTI in the UK on their own C8 RS6, which was fitted with an aftermarket OPF-back exhaust and their own Stage 1 remap. They ran the car 4 times in 4th gear with the stock airbox, then swapped to the Eventuri while the car remained on the dyno. The car was then run 4 times in 4th gear again. All tests were conducted on the same day with no other changes made. The graph below shows the highest power from the stock airbox compared to the highest power from the Eventuri intake. Both were the first dyno pulls with subsequent pulls showing power decreasing due to heat soak. As can be seen below, the intake provides a significant power gain across the entire RPM range. The highlighted point shows the highest gain in the RPM range of 60hp at the crank.

STAGE 2 TESTING

Dyno testing on a Stage 2 RS6 was conducted by Eurocharged Canada on a car with aftermarket downpipes, intercoolers, and their own Stage 2 remap. Figures here are shown at the wheel. They ran the car several times with both the stock airbox and the Eventuri, with the results shown below after taking the best stock results compared to the best Eventuri results. Again, we can see a dramatic increase in power and since this is on Stage 2, the stock airbox is an even greater restriction. The highlighted point shows the highest gain in the RPM range of 79hp at the wheels.

DRAG STRIP TESTING

We took a Stage 1 RS6 to a local drag strip to measure the impact of the intake on quarter-mile times and also 100-200km/h times. The car ran 3 times on the stock airbox to get a repeatable result, and then the intake was swapped to the Eventuri. The car was then run 3 more times to ensure the result was consistent. Results are:

QUARTER MILE

Stock Airbox 11.2s

Eventuri 10.75s

.

100-200km/h

Stock Airbox 7.46s

Eventuri 6.90s