This is great news, I saw the soundcard thing a LONG time ago but have never checked up on what came of it.
Maybe my 93 suburban could get a mileage guage with this approach, then I could determine why I have gotten up to around 23mpg when I have the thing filled to the ceiling and have a genny off the hitch and only get around 21mpg empty most of the time (my father gets better mileage half empty than me and drives it much harder, perhaps he is inadvertantly pulse and gliding as he never holds a speed on the highway)
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