I found this link on www.modularfords.com. I don't know if it fully applies to the GT but an interesting read for techo weenies.
BlackICE
http://www.motorcraftservice.com/vdirs/diagnostics/pdf/OBDSM503.pdf
Found on this link
http://www.modularfords.com/forums/2005-mustang/05-mustang-supercharger-16780-3.html
BlackICE
http://www.motorcraftservice.com/vdirs/diagnostics/pdf/OBDSM503.pdf
Found on this link
http://www.modularfords.com/forums/2005-mustang/05-mustang-supercharger-16780-3.html