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Originally Posted by pig
I don't see why it would not work on the Elise. It was very to install.
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It won't work on the Elise.
Most vehicles now days use a speed sensor that is essentially a pulse generator (or a voltage generator) and the speedometer counts the pulses (or measures the voltage).
On the Elise, the speed signal is passed to the ECU which accurately determines the speed. The ECU then generates a digital signal that encodes the speed to display on the speedometer - the digital value is transferred via the CANbus.
In simple terms, most cars use an analog speed sensor / speedometer. The Elise is digital...