According to the menu after you log the info you can replay it. The logging starts after 50% engine load or 50% throttle. Sounds like with a dual set up you can record 4 items for 1 run. Even if the information is written in an email to Allen he can do something with it. These gauges only read and log info and the only thing it can change is clearing the problem codes.

Jim, Where are you going to put the dual gauges??? Upper console, A-Pillar??