To download the original BigComm software, CLICK HERE.

When the link opens select “Run” twice, “Next” four times and “Install” once. The program will then self install, creating the correct file hierarchy, which is C:\Program Files\BigStuff\BigComm

Note: If your GEN3 ECU has a build date before January 2008, you should update the firmware before installing this software. The build date is located on the back side of the ECU. The cost for firmware updates is $100 USD, plus S&H. Please contact BigStuff for more information.