MegaTunix 0.9.23 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. The following version: 0.9 is the most frequently downloaded one by the program users.
MegaTunix is categorized as System Utilities. This PC software works fine with 32-bit versions of Windows XP/Vista/7/8/10/11. Megatunix.exe is the most frequent filename for this program's installer. The actual developer of the free software is David J. Andruczyk. We recommend checking the downloaded files with any free antivirus.
From the developer:
MegaTunix is the only native non-java tuning software for Unix (and now Win32) class operating systems that supports some of the available DIY EFI Fuel injection solutions includin the MEgaSquirt and FreeEMS Families. Tthe majority of MegaSquirt (MS1, MS1-Extra, MS2 MS2-Extra) firmwares are supported. MegaTunix has been redesigned in such a way as to be extensible via plugins to support new firmware variants
You may want to check out more software, such as Advanced Find and Replace, BatchRename Pro or xplorer² professional, which might be similar to MegaTunix.