I guess they are not doing Custom Calibrations with the SCT X4s like it sounded like they were doing. As it was explained to me, you get an X4, read the Strategy, send to Unleashed, Unleashed Mails tune back via email.Torrie sent me a message today.
Currently the Fiesta ST is still not supported. Aka the answer I got through SCT. I heard he has a tune for the ST, but apparently not.