Linking Scan Gauges
 

I know my scangauge has 2 ports for ease of installation, but can you actually link 2 scangauges in series to be able to read 4 or more gauges at the same time off the one OBT cable?

Yes, you can. Don't ask me if theres any special setup though. I've never done it. :)

I think the answer is "It depends", probably on the vehicle and what you want to display. There is no reference to dual or two or multi on the scangauge site that I see.

Borrow one and try it would be your safest bet.

I do think a MPGuino type device would be an excellent compliment to a scangauge though, you can have tons of gauges AND injector monitoring precision on the fuel efficiency. And there's no question about scangauge compatibility.

My understanding is that you can stick up to 4 SgIIs linked together. However, you may need to adjust the rate that they poll for information.