The Zumo 660 does support traffic, but you have to use the plug with the FM traffic receiver built in. I have thought about trying to modify the factory wiring to work in the FM receiver.
As for the mileage, it is based on simple miles since your last flagging the tank as full. I don't believe that it actually takes the fuel level from the Spyder.
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Dave
'11 RT Ltd.
Working on some custom LED lighting with an intelligent controller...
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