Welcome to the DIYAutoTune Downloads page. Here, you can find the latest tuning software, firmware updates, and documentation for your MegaSquirt EFI ECU or Transmission Controller. This page provides essential tools for optimizing your vehicle’s performance and troubleshooting. Our downloads are compatible with Windows, Linux, and Macintosh operating systems. Additionally, historical software versions are available for archival purposes.
Tuning & Datalog Software
TunerStudioMS & TunerStudio Ultra – Download
This tuning software application is used to tune your MegaSquirt EFI ECU or Transmission Controller
Compatible with:
- Windows
- Linux
- Macintosh
MegaLogViewer & MegaLogViewer HD – Download
This software application is used to review saved datalogs from your MegaSquirt EFI ECU or Transmission Controller
Compatible with:
- Windows
- Linux
- Macintosh
FTDI USB Drivers – Windows – Download
Executable for installing FDTI USB Drivers for usage with USB-2920 Adapter
FTDI VCP Drivers – Older Windows / Mac / Linux – Download
Link for FTDI USB Compatible Drivers for usage with USB-2920 Adapter
Port Check – Download
This software application serves as a communications test utility. It displays the available COM ports and checks for a response from MegaSquirt. This can be useful for determining if an issue lies with the ECU or the computer.
Firmware
MS3 / MS2 / MS1 / Transmission Control, I/O Box Firmware – Download
This firmware includes all the below products:
- MS3-Based
- MS2-Based
- MSPNP Gen2
- Microsquirt
- MS2357
- Transmission Control
- 4L60
- 4L80
- I/O Box
- MS1 (Obsolete)
NOTE: MegaTune is obsolete and no longer supported. TunerStudio must be used for all MS2/Extra revisions greater than 3.1.0 and all variants of MS3.
AMP EFI and DIYAutoTune Custom TunerStudio Dashboards
Obsolete Software & Utilities
NOTE: Presented for historical archive use only. TunerStudio is required for MS2 3.1 or newer and all versions of MS3. Development on these applications stopped in 2016, but the software is still available.
EasyTherm – to simplify configuring your MegaSquirt-I to accept the substitution of non-standard temperature sensors and to upload software revisions (not needed for MS2 or MS3)
PC Configurator – The original tuning software from Bowling and Grippo, it has fewer features than MegaTune
MegaTune – for tuning and data logging MegaSquirt with a laptop computer running Windows 9x/ME/XP/Vista. MegaTune Manual
MegaTunix Excellent tuning/datalogging software for Linux, Unix, Mac OS, and Windows (Dave Andruczyk)
