Your 2005 to 2007 Mustang GT CPU code is located in the engine compartment. Click on the image to the right to view a larger picture of the code location. When Brenspeed creates a custom tune for your vehicle we need to know what processor code your car has been assigned by Ford. In the engine compartment you will find a black rectangular fuse box located on the passenger side. Next to the fuse box you will find your silver CPU. On the CPU or the bracket holding the CPU will be a small white sticker. Printed on this sticker you will find your processor code. It will be 3 letters followed by 1 number..
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