Well, the SCT(Superchip Custom Tuning) chip is supposed to be custom, meaning that a dealer/tuner makes the program/tune then sells them.
Not like the old Superchip or Diablosport chips that had tunes created by the manufacturer then vendors basically just sold them, not tune them unless you bought a custom tune.
If you're going to get an SCT chip, I would recommend getting one that has been programmed/tuned by someone who has access to a dyno and has done extensive testing and data logging.
Also, the SCT flashers are cool but they seem to take a long time to download/upload the tunes.
I know in some cars, you have no choice like the Focus SVT and the new Foci with the Duratec engines. They have no serive port on the PCM/EEC V/ECU.
On the Focus SVT, it takes like 10-15 minutes for download/upload of the files. You have to backup your stock file first then download the new tune/file.
Then, if you have multiple tunes, you can switch them on the fly with a flasher like an SCT chip, that can hold 4 programs/tunes plus the stock tune.
