TuneBoy 5.0.0.3 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. TB_Engine.exe, TuneBoy.exe or TuneBoy2.exe are the common file names to indicate the TuneBoy installer.
The most popular versions among TuneBoy users are 5.0, 3.9 and 3.8. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This software is an intellectual property of TuneBoy. The software lies within System Utilities, more precisely Device Assistants.
From the developer:
TuneBoy is a program that provides a diagnostic interface, with all the features of the official Triumph service tool. TuneBoy also provides diagnostic capability for Aprilia and Benelli motorcycles with the Sagem ECU. You can modify the fuel map via a fuel trim table, modify the ignition map, change the rev limit, change the thermo fan settings and modify air fuel targets used in the ECU.
You may want to check out more software, such as Snappy Fax 2000 or iPHUC for Windows, which might be similar to TuneBoy.