Quoting CoolClean577:
How you guys tune it bec it don't got no imfo on hooking it up or tuning it. What does it do? Or how does it work.
All it does is connect an external monitor ( laptop, notebook, smartphone with App, etc ) to the OBD2 ECU, nothing more or less.
You would need specific tuning software for the vehicle ECU, it will not come when purchasing the Tactrix brand cable.