Gaunty,
Out of curiosity what is your opinion of the accuracy of the Shadin fuel flow meter?
One thing I have noticed is that the PA31 book states certain EGT limits. This is all well and good if your EGT's are calibrated - if there not then???
I must say I use both instruments to check each other, you have your power setting your EGT and your fuel flow and you know what indications you should be getting if x is set... not that hard really. With time you get to learn each aircraft as they are all different, well the 4 different ones I've flown have been.
HA