All of our mail-order tunes begin life on the dyno. They are not created in isolation or based on assumptions — they are developed, tested, and validated using real vehicles under real load.
Developing the base file on the dyno
When we tune a vehicle platform for the first time, the process starts with creating what we call a base file. This is developed during a full dyno tuning session, where we methodically adjust and refine the data within the ECU to achieve the desired outcome — whether that's improved power and torque, better drivability, towing performance, or overall efficiency.
During this process, we take into account a wide range of factors, including (but not limited to):
- How much power and torque the engine internals can safely handle
- The boost capacity and efficiency of the factory or upgraded turbocharger
- What the drivetrain (gearbox, clutch, transmission, diffs) can reliably support
- Thermal limits such as exhaust gas temperatures
- Environmental influences like ambient temperature, altitude, and fuel quality
The goal at this stage is not to chase maximum numbers, but to understand the platform and define safe, repeatable operating limits.
Building a tune suitable for multiple vehicles
Once this data is gathered, we produce a tune that operates comfortably within safe limits across all of the above systems. This allows the tune to support natural variation between vehicles with the same or similar modifications.
In a mail-order context, this means we are often “leaving some room on the table” in terms of absolute peak output. This is intentional. While modern manufacturing tolerances are extremely good — making engines and drivetrains highly repeatable — real-world factors such as wear and tear, maintenance history, and component age can cause small differences from one vehicle to another.
In practice, most vehicles with the same modifications and similar age respond very closely to one another. True outliers are rare. However, the conservative approach ensures the tune remains safe and reliable across a wide range of conditions and vehicle states.
Validation across multiple vehicles
A mail-order tune is not released after tuning just one vehicle.
Once a base mail-order file has been developed, we continue to test it on additional vehicles of the same model that come in for dyno tuning. In many cases, this file is used as the starting point for those sessions, allowing us to verify its behaviour across vehicles with different kilometres, usage histories, and component wear.
Typically, a mail-order tune file is tested and validated on 10–15 vehicles before it is released for use through our mail-order tuning service. This process confirms that the tune is:
- Consistent
- Conservative where it needs to be
- Delivering the intended gains safely across a wide sample size
The end result is a mail-order tune that is:
- Developed on the dyno
- Based on real data, not assumptions
- Tested across multiple vehicles
- Designed to deliver reliable, repeatable gains with a strong safety margin
This approach allows us to offer a mail-order tuning solution that balances performance, safety, and longevity, while still delivering meaningful real-world improvements.