18. Because our truck was a very early '13 year model, the original Bully Dog software wasn't compatible. After several phone calls to their tech support hotline, we were able to update the GT tuner with new software and firmware. This was achieved by transferring files from our office computer to the micro SD card in the GT tuner. Once we had the right program files loaded, we followed the screen's prompts and downloaded the '13 EcoBoost tune.