Quote:
Originally Posted by Justinlw
The SF comes with three generics, but they unlock it to hold custom tunes. Once you unlock for custom, you can't go back to generic. The xcal3 is just a custom tuner that does not come loaded from the factory.
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SCT has 2 tuners SF3 and X3. X3 is blank from factory ready for custom tunes (max of 3), SF3 has 3 canned and ready for 3 custom tunes. You can go back to canned, factory, or custom whichever you choose, you do not lose your canned tunes.