I ordered a Scan Gauge (Mk1) months ago, it was backordered, and I forgot all about it... last week a box arrives w/ the new Mk2! I was fiddling w/ my 03 Civic Si and it works well. Yes, the sampling seems a bit delayed (by 1/2sec or so) but does give other useful info like water temp. I just returned from a weekend roadtrip in our 03 Odyssey using the SG2. We used the "trip" settings and found the MPG to be rather optimistic. It read "28MPG" when the gas-station math showed 24.

My initial reaction is more novelty than tool, but the Code reader seems to work well (no codes yet!) Still, a very cool device, looking to hook into the HCH-II later this week. Will give you info after I try it out.

My 2¢

Four-passenger, stop-n-go, schoolbus-commute.
06 HAH & 06 HCH-II... yes, we're a two hybrid family.