AutoCal Tip of the Week! Six MB of onboard memory exists on the AutoCal. Each tune file can take anywhere from .5 to 2MB of data, depending on vehicle and controller type. If you receive the Error code of $0194 while copying files to the AutoCal indicates that the internal memory is full. With the 6MB limit, you may not be able to store all of the files pertaining to your vehicle on the device at one time. Delete all logged data and try again, copying only the files immediately necessary.