Originally Posted by
viper84737
I did not mean gearing. I meant SpeedoHealer and SpeedoDRD devices. My understanding is that the signal comes from a single source, a wheel speed indicator, which is then translated into a speedometer reading via simple math. Since that signal doesn't seem to be interrupted in any of these devices, then split off and calculated separately by the ECU, I fail to see how one can change just the speedometer reading without affecting the odometer value itself.
Are you 100% SURE they calibrate BOTH speedometer AND odometer to correct values? If so, can you provide evidence, for I have testimony to the contrary.
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