If anyone is going to install the Ford Racing Cold Air Intake and is not comfortable disconnecting the PCM cables to get the PCM serial number, you can get the PCM number an easier way. If you look on the side of the PCM housing (the black area) there should be a tag with 4 digits, take that number along with your VIN to your local Ford dealer and they can get the PCM serial number for you, along with any other info you may need to order the tune. I hope this information is helpful and makes for an easy install. See the pictures below to see were you can find the tag. Some cars may have the same four digits as the one in my pictures, this number is for calibration purposes.