You basically want to let him know what your mods to the truck are and what your goals for tuning are, like a good tow tune or street performance etc.
Files are sent via email then you download them into your tuner in the custom file section with a usb cable from your computer, then into your truck. It's usually recommended to update your tuner with the latest firmware from SCT off their site before loading new tuning, but I would ask Mike first if this is necessary. http://www.sctflash.com/tsupdates.php?PNID=3015&GUD=1&GSER=1
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