Autosport Labs

Hi there, I have some problem reading RPM from the coil. I have the race capture pro MK3. I tried connecting directly from the ecu coil #1 signal to RPM 1 Input but no luck. It work fine on other device, I checked with an oscilloscope and I have clean square wave. Tried pretty much every combination of timer speed and pulse per revolution but no luck. Is there a maximum input voltage or something else?? I'm a bit confuse and out of idea to make this work. Any idea??

Hi, RaceCapture is not designed to connect directly to an ignition coil if it is the type of coil that has a high voltage flyback. if it is, then you will need the CoilX adapter - please read the info here: https://wiki.autosportlabs.com/CoilX

You said "connected to the coil" - so the point above is worth mentioning.

What year/make/model is the car and what kind of coil is it?