Muddog, if you were referring to me, I appreciate your thinking I have a pretty face
Obviously you have not met me in person
Back to the subject at hand. If you have a DDEC engine, you can take advantage of data from the very accurate engine sensors. The data port in the front has all the information you need. To get it out, you can buy a DDC Pro Driver, hook up a Pro-link computer reader, or buy a product like SilverLeaf VMSpc for $395.
Full disclosure, I am a SilverLeaf dealer. To get an idea of what you can see with the SilverLeaf, go to: http://www.rvsafetysystems.com/Silverleaf3.htm.
I have some screen captures of my "dash".