tuning the Toyota Yaris GR

2020 Toyota GR Yaris

1.6L –  Petrol


Denso R7F701216

The Challenge

In this blog post, we are focusing on tuning the Toyota Yaris GR. Built for the World Rally Championship, the Toyota Yaris GR is the first WRC homologation special from Toyota in 20 years. This car is engineered for racing, so you might wonder how ECU tuning is relevant for a vehicle like this. Keep reading, and we’ll explain all about it.

The factory settings of the Toyota Yaris GR are designed to strike a balance between performance, fuel efficiency, and emissions compliance. While this balance ensures the car meets various market regulations and performs reliably under standard conditions, it also means that the car’s full potential is often restricted. By unlocking the ECU, we can enhance the engine’s performance parameters, allowing the Yaris GR to perform at a level closer to its true capabilities.

The Yaris GR’s 1.6l, three-cylinder turbocharged engine is a marvel of modern engineering, but its performance can be significantly enhanced through ECU tuning. This process involves recalibrating the engine control unit to optimize fuel delivery, ignition timing, and boost pressure. These adjustments can lead to impressive gains in power and efficiency, transforming the driving experience.

The Solution

One of the most enticing benefits of ECU tuning the Toyota Yaris GR is the potential for significant increases in horsepower and torque. With a carefully calibrated tune, drivers can experience a noticeable boost in acceleration and overall power delivery, making every drive more exhilarating. Additionally, ECU tuning can enhance throttle response, resulting in a more responsive and engaging driving experience. This improvement in throttle sensitivity can make the GR Yaris feel more lively and eager to respond to driver inputs, whether on twisty back roads or during spirited driving sessions.

One of the key advantages of our ECU tuning process is its ability to be customized to suit individual driving preferences and performance goals. Whether you’re looking for a more aggressive tune for track days or a smoother, more refined tune for daily commuting, we can tailor the ECU settings to meet your specific needs. This level of customization ensures that your Toyota Yaris GR performs exactly how you want it to, providing a driving experience that is uniquely yours.

To ensure the safest tuning process, we use state-of-the-art equipment such as the Alientech KESS3 to flash the tune and a dyno to monitor the engine’s performance throughout the tuning process. The dyno allows us to make precise adjustments in real-time, ensuring that the final tune is both powerful and reliable. This meticulous approach to tuning guarantees that your Yaris GR will not only perform better but also maintain its reliability and longevity.

Increased Power And Torque


Increased Power


Increased Torque

Further benefits Of ECU Tuning The Toyota Yaris GR

Increased Power and Torque

Increased power and torque result in safer over taking and easier open road driving. Throttle response is also increased.

Years of Development

We have been tuning Toyota’s 1.6L petrol engines for years, and understand how they work as well as the limitation on factory hardware.

Emissions solutions

We have solutions for emission systems such as disabling the catalytic convertor system and associated DTC fault codes. 

Would you like to enhance your customers’ vehicles the way we’ve enhanced this Toyota Yaris GR? Contact us today to learn about becoming a dealer and adding a valuable service to your current business.

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