To Lance and others using CFS, the data that Jeff Sanders is referring to is the log file that is generated 1x every second which can be downloaded from the Chelton.  There is a software program available that allows you to view the previous 5 flights; everything from flight characteristics and path plotting to review of engine performance.  Peter Stiles and I used this software to review Lee Behels engine performance at the Reno Air Races after each race.  It proved to be very helpful in setting up his engine.  In addition, it allowed him to “see” his entire path over the ground around the pylon course.  The software is by Pegasus and is sold through Chelton.  It is expensive ($499) but works well.  Some Chelton pilots download their log files and archive them for later reference.  If you have any questions about the software or the data-logging feature, you are always welcome to contact me directly.