Quote:
Originally Posted by MetroMPG
open source MPGuino, which measures actual fuel use through monitoring injector pulses, instead of extrapolating it from air intake (which is what the SG does). Once you get the MPGuino calibrated for your vehicle, it will be accurate regardless of technique used, open/closed loop, etc. |
Quote:
Originally Posted by winkosmosis
Why doesn't the Scanguage do that?
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The
scangauge is a plug-and-play device that reads from the OBD-II data port. Injector pulses are not reported on OBD, so it can't use that data. It is accurate as far as the data available from that source. MPGuino reads from the ECU directly, but you have to connect it to the wires under the dash.
Scangauge: plug-n-play, pretty good accuracy, reads/clears error codes, can transfer between vehicles
MPGuino: best accuracy, but harder to install and semi-permanent installation