Q: What is the difference between Fetrotech Tool black and silver color?
The black one has a pcmtuner port as well. You can use it standalone (has independent software) or use it with pcmtuner or other devices.
The silver one MUST be used in conjunction with the pcmtuner.
Both can access vz-performance online tuner account to download VR files, map pack and damaos.
The silver one can be controlled by pcmtuner app to access pcmtuner account for instructions and wiring digrams.