Here's a discussion on CMPG about the eco-cam/Atkinson operation of this engine.
Not much new in it, and it also suggests monitoring the actuator/solenoid or finding the
Civic i-vtec detection using SG2 - CleanMPG Forums
But there's no indication that this was ever done.
It also suggests that one way to monitor this via the ScanGauge would be to watch MAP values. MAP would increase as the eco-cam mode comes online and the drive-by-wire throttle is opened by the computer.