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M-9603-M8B is what I have. The extra torque should be good, but what I'm most interested in is the improved shifts of the 10 speed most folks comment about.

When Ford finally made PP2 available for my 2021 Mustang GT, I ordered it. When the box came, I wanted to set the download to my account so I followed the instructions and installed the app on my PC and then updated the Procal4. All seemed to be going well until I tried to save the stock cal...