Eventuri carbon oversize turbo tube for Toyota GR Yaris

Performance Increase : 14 k / 25,8 Nm mid-range; 9 k / 12,2 Nm peak rpm

he Eventuri Carbon Turbo Tube for the Toyota GR Yaris and GR Corolla has been engineered to provide the turbocharger with a less restrictive supply of air, improving response and allowing peak boost to be achieved earlier in the RPM range.

Our development objective was clear: increase the available air volume while maintaining a smooth, laminar airflow path. Achieving both required a complete redesign of the factory turbo inlet, carefully balancing increased capacity with optimised flow characteristics.

Following extensive development and testing, we increased the internal volume of the turbo tube from 1,300cm³ to 2,200cm³—an increase of almost 70%. Much of this gain comes from the lower section of the tube around the critical bend leading into the turbocharger. The OEM component is particularly restrictive in this area, whereas our redesigned geometry creates a significantly larger air reservoir immediately before the turbo. This encapsulated volume of air allows the turbocharger to draw from a less restrictive source, reducing wastegate duty cycle and delivering a noticeably sharper throttle response.

The primary tube is manufactured from prepreg carbon fibre, providing exceptional rigidity to eliminate the possibility of deformation under the vacuum generated by the turbocharger. It connects seamlessly to a bespoke nitrile elbow, which mates to a precision CNC-machined aluminium flange that bolts directly to the turbo.

Designed with future upgrades in mind, the system features a modular CNC-machined flange. This allows compatibility with larger hybrid turbochargers by simply replacing the flange, with alternative options available separately.

Parameters and specifications

Manufacturer details