Aquamist HFS-3 and MINI Tank GB

[Howerton Engineering]

I had one of these and wish I had never sold it. It's not everyone's cup of tea, but as a logger works really well. You put a SD card in the side and it will record for days. Everything worked well except for the real time dyno feature, every time I hit second and spun the tires then gripped, it would cut off the run for thinking I had lifted.

It's got analog inputs, connected every time perfectly when the car was started. I'm sure there are other good ones, but I really liked this one.

http://www.auterraweb.com/dashdynoseries.html