I have down stacks of logging with livelink on a laptop & works great..... live link 6.3 is very stable. As for using x3 for logging, pretty sure its something that can be done but not high on agenda for AUS sct customers, still a lot of bugs. I have modified tunes and sent them in cef format for customers to use that they can upload themselves with custom tune loader into there device then flash to vehicle. Holden & EFI LIVE have customer handheld (black box) data logging & tune upload facility allowing remote tuning of vehicles, as all is done via email or remote control or PC.