Eventuri Intake Toyota GR Yaris Carbon - matte

Air Intake for Toyota Yaris GR

Power Increase: 15 HP, 18 Nm

*Images show our optional carbon fiber engine cover.

The GR Yaris air intake was developed through extensive data logging of temperatures, flows, and dyno testing. As it is a turbocharged engine, heat and volume were the main factors considered during development. This intake system was designed to offer maximum flow while maintaining low intake temperatures. Each component was designed to provide a smooth and unrestricted path to the turbocharger. By providing a sealed system, we improved the IAT (intake air temperatures) over the standard airbox, while also increasing the internal volume to reduce pressure drop and therefore decrease losses during turbocharger operation. This allows the turbocharger to operate more efficiently and reach maximum boost earlier, resulting in a net increase in performance.

The filter itself has an outer diameter of 210 mm or 8.3 inches, with a filtration surface area of over 130,000 mm². The patented Venturi housing was designed to provide maximum internal volume possible for the GR Yaris and ensures laminar flow to the turbo inlet pipe.

Eventuri Difference

The Eventuri GR Yaris system utilizes our patented carbon fiber housing, which provides an aerodynamically efficient airflow path from the filter to the turbocharger. This is not just another cone filter with a thermal shield, but a unique design that invokes the Venturi effect and maintains laminar flow conditions to reduce resistance at the turbine. You can read more about the housing design and its operation HERE.

Performance Testing

Our GR Yaris intake has been tested by various reputable tuners worldwide, all of whom reported similar results. The first dyno chart comes from RaceCal in the UK. Several runs were conducted with the standard airbox to obtain a repeatable result, then again with the Eventuri intake. The tests were conducted on the same day, one after the other, with the hood closed. The results show an increase in torque and power across the entire rev range - not just at the peak revs, making the car feel more responsive and able to accelerate faster through the gears. Ambient temperatures during this session were 11.9 degrees Celsius for the standard intake system and 15.6 degrees Celsius for the Eventuri intake - the temperature increase resulted from the heating of the dyno cell after runs with the standard intake system.

Summary of Dyno Results:

The second set of results comes from Master Tuning Asia in Hong Kong, who tested the intake against the standard airbox on the same day, but this time in warmer conditions of about 32 degrees Celsius. The systems were tested 3 times, and all 3 charts show increases across the entire rev range, with the third run showing the largest increase, as the standard intake struggled with intake temperatures.

Eventuri Toyota Yaris GR Kit

The Eventuri GR Yaris air intake system consists of a series of components designed to perform a specific task and crafted with the utmost care. We use 100% pre-preg carbon fiber without any glass fiber, allowing us to achieve a smooth inner surface to maintain smoother airflow.

Each air intake system includes:

• Carbon fiber patented Venturi filter housing with integrated MAF section
• Individually crafted high-flow cone filter
• Carbon fiber intake pipe
• Rear tube produced to OEM specifications
• Specially made mounting hardware
• Laser-cut steel brackets
• Custom EPDM hose
• CNC machined MAF mount and bracket mounts

Cone Filter Housing

The filter housing consists of our individually crafted Generation 2 filter, aluminum inlet cover, steel bracket, and integrated MAF section. The carbon fiber inlet surrounds the filter mounted in reverse and smoothly shapes the airflow down to the MAF section, which then connects to the rear intake tube. This changes the airflow path compared to the standard intake, where air enters from the front of the filter housing, changes direction by 90 degrees to pass through the flat filter, then again changes direction by 90 degrees to pass through the MAF section. Our system is much more direct, with the airflow entering from the front of the filter housing and flowing to the MAF section without abrupt changes in direction. The result is a smoother path from the filter to the turbocharger inlet pipe, allowing the turbocharger to operate with less resistance.

Individual Cone Filter

To achieve maximum flow, we have used our largest filter, which has an outer diameter of 210 mm or 8.3 inches, and has been flow tested with a 4" diameter inlet housing, capable of flowing up to 940 CFM at 28" H2O pressure. The filtration media is tested according to ISO standards to ensure filtration meets OEM standards, and it is also dry. The filter is made with our signature flow cones to assist in the operation principle of the Venturi housing.

Eventuri Technology

Carbon Fiber Inlet Pipe

The pipe brings external air to the filter housing from the front of the car, from the bumper grille section. We maintained the maximum volume up to the front of the engine bay and eliminated restrictions at the front of the pipe, creating an opening just behind the bumper, where the hood closes. This area of the engine bay remains at ambient temperatures during driving, allowing the intake to draw unrestricted air from a small opening behind the grille. We did not extend the pipe to the other side of the engine bay to use a second opening in the grille simply due to the sudden angle of airflow and spatial constraints between the engine and the hood latch. Additionally, using the second opening would have stopped cold air access to the engine bay, aiding in reducing overall heating. Finally, the pipe seals with an expanding rubber seal, allowing the filter housing to move with the engine without ingesting hot air.

Rear Tube and EPDM Connector

The final elements in the system are the rear intake tube and EPDM connector. The standard rear tube has a sharp internal bend radius, and at high flows, this can cause undesirable turbulence, which can affect turbocharger efficiency. We redesigned the rear tube to allow smoother bends, which also allowed for optimal placement of the filter housing. To cope with heat from the rear of the engine, this tube is made from thermoplastic material with fiberglass reinforcement. There is also a CNC machined reinforcing ring at the rear connection point, where the clamp would be attached. This prevents distortion during tight clamping - as with the standard OEM tube. The connection between this tube and the filter housing is achieved using a specially made EPDM connector, allowing for engine vibrations and movements.