Post by
ILikeMy240sx »
https://forums.nicoclub.com/ilikemy240sx-u16757.html
Mon Nov 20, 2006 4:19 pm
You need the speed sensor reading and thats where you get it from.
This is how I have my HKS Turbo Timer hooked up and the turbo timer measures my speed (0-60, 0-100, 1/4m time, etc etc)
BTW, there is no such thing as speed output from the ECU. The speed measurements are given to the ECU from the speedometer which in turn gets the signal from the speed sensor.
There would be a speed output in the speed sensor which is equivalent to speed input in the ECU because the signal travels like this: Speed sensor -> Speedometer -> ECU