There was a download of MegaTune 2.25 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This free program was originally developed by Eric Fahlgren.
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. The most popular version of the MegaTune is 2.2.
The program lies within System Utilities, more precisely Device Assistants. Megatune.exe is the default file name to indicate the MegaTune installer. The latest version of the program is supported on PCs running Windows XP/XP Professional/Vista/7/8/10/11, 32-bit.
From the developer:
MegaTune is a great Windows and later configuration editor for the MegaSquirt EFI controller. The program allows all of the parameters to be modified and has a real-time VE table editor, which allows a vehicle passenger to tune the engine while driving.
You may want to check out more software, such as DIYAutoTune's Tuning Software Package - 052610, which might be related to MegaTune.