Precision Turbo and Engine BigStuff3 GEN3 PRO SEFI System Hardware & BigComm Software - Manual (Page 40)

BigStuff3 Pro SEFI System
Version 2.1 – February 2011 33
Lastly, if you want to open software put a check mark in the box next to Launch BigComm, as shown
below.
Connecting to the PC
The BigComm software has now been successfully installed on your personal computer!
A 5’communication cable connects the BigStuff3 ECU with a personal computer (PC). A 25’ cable is
also available from BigStuff3.
Using the communication cable supplied with the system, connect the 3-way Packard connector to the
mating half 3-way connector marked CalPort on the Main Wire Harness.
Connect the RS232 connector to the back of the personal computer.