has any one tired these mpg displays?

[retrorocket]

Has anyone tried one if these?

http://www.porcine.com/gps/mpg/mpg.html


or

http://www.circuitcellar.com/avr2004...05abstract.pdf


or maybe this one This one I would not recommend.

http://waterfuel.100free.com/car_electrolyser.html

[SVOboy]

The first is much too expensive, I'll have to look at the second when I have more time.

Check out the superMID,

[Snax]

Seriously, if your vehicle is OBDII, don't waste your time looking for anything beyond the best price on the Scanguage II. It's functionality far exceeds those other options and at $150 or so would be difficult to replicate for the money.

[landspeed]

The SuperMID is good

My current tank is looking good - I have to hold off the temptation of topping it up to see how I'm doing, but it is beyond anything I've done before!

[GasSavers_BluEyes]

Just remember that whatever the gauge says, the test is at the pump. My car came from the factory with an instant and average fuel economy feature and it always reads several MPG lower than what I get at the pump.