I think it can be fairly easily achieved with Arduino or any other microcontroller. First you have to get the pulses from VSS then calculate pulses that you need for your speedo and just generate output pulses accordingly to the pulses from VSS.
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Quote:
Gerhard Plattner: "The best attitude is to consider fuel saving a kind of sport. Everybody who has enough money for a strong car, can drive fast and hit the pedal. But saving fuel requires concentration, self-control and cleverness. It's a challenge with the nice effect of saving you money that you can use for other more important things."
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