This software for the Mega Squirt has a good display. It is also tuning
software but that does not have to be used.
    http://tunerstudio.com/index.php/tuner-studio
Many Andriod tablets can be "rooted" and a version of Linux installed.
The software connects to a computer via a USB cable.

I also ran across this software. Although it is not open source, the
price is reasonable.
An article about it is the current ( August 2012) issue of Nuts And
Volts magazine.
    www.basic4android.com

chris smale


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