Quote Originally Posted by ginganggooly
Does it log the data in the ECU/controller, or does it just return realtime values?

I don't see the point in the handcontroller for the myriad of other adjustments as the tuner would sit down with a laptop, with the proper software, as would the end user if they're serious about tuning.
no "logging" with the HC, only realtime data...

it does do a "map trace" though...

you need 3rd party device for proper datalogging though, it is called FC-datalogit...