JAZ-013 Posted August 16, 2020 Report Share Posted August 16, 2020 So I've just hooked up the dash Speedo on my '98 Supra to run off my V88 so that I can finally calibrate it. It has been reading high for years. However, I've got something weird going on. Soon as the car starts moving and the ECU has detected speed, the dash Speedo jumps to 20kph. Once the actual speed catches up, the gauge is then absolutely spot on with the ECU through a full sweep. ECU reads speed under 20kph just fine so it's just the output/gauge. Anyone know why it would work, but with the sudden 20kph jump? I'm using the IGN8 aux out if that has anything to do with it. Cheers. Quote Link to comment Share on other sites More sharing options...
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