As part of our expanding Toyota product range, AIRTEC Motorsport is proud to launch our inlet manifold upgrade aimed at modified Yaris GR owners who want to further improve the performance of their cars for track or fast road use.
AIRTEC Part No: ATMSYGR23
The Design
We wanted to develop a manifold with an improved design to allow more flow, whilst introducing longer inlet runners to help produce more power at lower engine speed. We also wanted to incorporate a design that increased air flow balance across the three cylinders. Crucially, we were also determined to create a true direct replacement manifold that required no further modifications, such as custom fabrication or a costly aftermarket ECU.
Tested – Increased and Balanced Flow
Our freer-flowing design measured an improvement in flow of 36% in comparison to the original. Furthermore, by flow testing the original manifold and using runner number two as the benchmark, our test data revealed runner number one flowed a 13% difference on average whilst runner number three flowed an 11% difference on average. In direct comparison, the AIRTEC Motorsport manifold revealed a difference of just 2% on runner number one and only 4% on runner number three, providing much more equal balance across the cylinders — crucial for safe and efficient fuelling as well as consistent power and torque.
Direct Replacement Fit
The manifold utilises the original throttle body and pipework, includes moulded fixing tabs to secure the coolant lines and wiring loom, and allows the original rubber gaskets to transfer over for a simple and easy installation process.
Please note: the original engine cover will need trimming to fit, or you can fit the AIRTEC Motorsport replacement engine cover. If you have an AIRTEC Motorsport catch can fitted, please choose from the drop down menu, as the breather fittings require different take offs.
Dyno Tested
Back-to-back testing on an AIRTEC demonstration Yaris GR fitted with a big turbo conversion showed power increase from 405.2bhp to 415.0bhp — an increase of nearly 10bhp with no other modifications.
Features:
- 36% increase in internal flow compared to original manifold
- Improved engine performance and throttle response
- Dyno testing showed increases to both power and torque
- Proven to distribute flow more evenly across all three cylinders
- True direct replacement fit that requires no additional parts
- No ECU/throttle body upgrade or pipework required
- Will also work with larger 54mm throttle body, if preferred
- Cast aluminium construction for improved strength
- Finished in a high-quality black powder coat
- Includes all fixtures and fittings required to fit
- Detailed installation instructions included
Registered Design Right number: 6410582
