I remember a program where you could read out the vital statistics of the plane as shown on the gauges. They could be displayed in graphs. I don’t remember whether the data were extracted in real time or from a track file after the fact.
It is not UDPspeed (at least in this form or version):
http://forums.ubi.com/eve/forums/a/tpc/f/23110283/m/2511087684
Download:
http://www.mikesteven.pwp.blueyonder.co.uk/IL2/UDPSpeed_BF109K_1280x1024_v1.zip
– Edit –
Found it: UDPgraph.
http://www.avcsite.ru/il2dl/graph_en.htm
Download:
http://www.avcsite.ru/bin/UdpGraph2.zip