In order to datalog an aftermarket sensor in the ECMLink application, you must first tell the application where the sensor is connected to the ECU (which input pin). You do that in the “Pin Assignments for Datalogging (PC-side)” section of the ECU Inputs tab shown to the right (click to enlarge).

You basically tell the application which type of sensor is connected to which input. Then the application knows when it sees data coming from the ECU associated with that input, it can treat that data as if it where the redefined aftermarket sensor you selected in the drop down box in the “Connected sensor” column.

We have pre-defined a number of common sensor calibrations for you. These include things like the Innovate LC-1 wideband, the GM 3 and 3.3-bar boost sensors, the AEM boost sensors, etc., etc. A complete list can be found on our Supported Aftermarket Sensors page.