as has been mentioned, those older HW xerun v2.1 are the same as the speedpassion gt 2.x LPF and the multitude of cheap (sub £15) ebay copies like:
http://www.ebay.co.uk/itm/2218631386...%3AMEBIDX%3AIT
Get the HW progbox and the latest hobbywing USB link software package, and you can update both the box and the speedo to the latest modified (boost and turbo) software. The software gives some help as to the different versions you can put on, looks like V3_0_110930_mod has been described above. You can they play with the settings with the box, or with the usb software on your pc.
Those sub £15 speedos are fine for vintage and occasional use cars.
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