Forge Motorsport Toyota Yaris GR and Corolla GR Upper Airbox Induction Kit — Induction Kit for Toyota Corolla GR. Technical specifications and compatibility are based on Forge Motorsport product data.
Product Details
- Gains of13bhp
- Peaktorque gains of 8nm
- High quality carbon fibre
- Pleated performance air filter
- No engine management check lights (EML)
- Increased air flow
- Lifetime warranty*
The Toyota Yaris GR has proven itself to be a fantastically capable vehicle since its release, and the development team at Forge Motorsport have been able to work their magic once again to find further improvements.
After continued testing and discussions with owners of Yaris GR’s, the stock airbox has proven itself to function well, especially with the stock map. However, the weakness in the airbox is most definitely the quantity and directional flow of the air. As such, Forge Motorsport explored several different avenues, before settling on a replacement upper airbox that mounts to the stock lower. When used in collaboration with theForge Motorsport Inlet Duct (FMINLD1)performance car part, it ensures a consistent cold feed of air into the lower airbox that can then be delivered into a refined upper airbox. The increased diameter from 80mm of the stock inlet pipe to 89mm produces avolumetric increase of around 20%in just the connecting pipe from turbo inlet adapter to the airbox alone. After running data and tests it was decided that Forge Motorsport would not use a panel filter, but instead a cone filter as shown in the CAD below. 3D scan data was utilised to ensure that the cone filter would fit in the optimum position inside the lower airbox, not just for ease of fitment but also to allow for optimum flow into the inlet tract.
Due to the sensitivity of the MAF and stock map of the Yaris, a lot of testing was required to ensure that performance was gained without inflicting the driveability of the car - especially as Forge Motorsport was changing from a panel filter to a cone filter and anincreased diameter. To test this in real world conditions, Forge Motorsport created a modular design that was 3D printed and allowed for different variations of MAF position, diameter, and airflow to be tested on road and the dyno. After finding theoptimum design, Forge Motorsport then reprinted the full prototype and left this on the vehicle. This allowed Forge Motorsport to continue Forge Motorsport's testing to prove out the performance repeatability in real world driving conditions. Forge Motorsport also noted at this stage that there is a small gain in induction noise.
This product works extremely well when collaborated with existing Forge Motorsport performance products for the Toyota Yaris GR. With the release
Vehicle Fitment
- Toyota – Corolla GR
- Toyota – Yaris GR – Gen 1 (2020-2024)
- Toyota – Yaris GR – Gen 2 (2024 - Onwards)
- Lexus – LBX – LBX Morizo RR (2024 - Onwards)
