has anyone read up on this? looks like the 2010+ 6.7 cummins is going to get an update as soon as tomorrow from H&S that allows custom tuning through software similar to EFILive.
Here's a screen shot: http://www.rollinsmokediesel.com/pd-hs-performance-maxx-calibration-control-tuning-software.cfm
Here's a screen shot: http://www.rollinsmokediesel.com/pd-hs-performance-maxx-calibration-control-tuning-software.cfm