We are excited to preview our upcoming product designed to solve a hidden performance bottleneck on the Toyota GR Yaris: the PIII MAP Sensor Cooling Duct.
If you have ever noticed your car dropping performance during a hot day on the road or a track day, this engineered solution is exactly what you need.
The Problem: G16E-GTS Heat Soak
Toyota Gazoo Racing faces immense cooling challenges while running the GR Yaris in 24-hour endurance racing at the grueling Nürburgring. As you may see in the picture below, taken from during the race scrutiny, an additional sensor cooling duct was added. 
Even with open hood vents, a critical flaw remains across the G16E-GTS engine platform.
- The Sensor Location: The manifold absolute pressure (MAP) sensor sits directly on top of the throttle body in the intake manifold.
- The Power Cut: This sensor is highly susceptible to heat soak. When readings approach or exceed 55°C (131°F), the factory ECU initiates a digressive curve that cuts engine power.
- The Manifold Trap: This issue heavily impacts stock cars, but it is even worse for owners running aftermarket intake manifolds, which suffer from incredible heat soak. We run a 550bhp billet engine GRY racecar with a friend in Australia, and heat soak was so bad he had to revert to stock intake manifold!
The Solution: PIRAS Motorsport MAP Cooling Duct
While there is one known prototype in Japan, they fail to address real-world environmental elements like rain. Spraying water at high speeds directly into the engine bay and specifically on an electrical sensor risks damaging components.
Our bespoke duct solves this using advanced Computational Fluid Dynamics (CFD) engineering.
- Water Separation Technology: The internal aerodynamics use vehicle speed and gravity to separate water from the air. (Most of) water forces itself to the lower wall of the duct and safely exits through a dedicated drain opening.
- Optimal Airflow: It routes a steady stream of outside air directly onto the MAP sensor area with minimal pressure loss.
- Easy Installation: The lightweight, 3D-printed duct is incredibly simple to fit, securing to the car using just one single bolt.
Availability & Pre-Orders
As of July the 2nd 2026, the duct is currently in prototyping and testing phase.
We will be conducting local vehicle verification and track testing over the coming two weeks.
The cooling duct will be fully in stock and available for global shipping in less than a month. Given the high demand for track-day reliability, we highly recommend considering a pre-purchase to secure yours from the very first batch, also because our warehouse will close on August the 7th for summer vacation!
For questions or pre-order inquiries, drop a comment below or email us directly at piras@pirasmotorsport.com.