I just installed Haltech PLatinum pro plugin EMS on my AP1 but couldn't figure out how to do datalogging
how to download the log file from the unit.

Can anyone help?

 

At the bottom left side of the screen on the software there are 2 tabs down there.
One will say Data manager and the other Devices, you need to click to the one that says Data manager once the Haltech is ONLINE that tab down there will have a red record button and it will datalog what ever values you have active on the tuning page. Once you hit the square stop button you can save the file to CSV on a desired folder or even just play it back as well if you just want to quickly see the datalog and not save it.