Selling a used Dashhawk.
Use it to monitor, datalog various parts of your car. Run 0-60, 1/4miles. Supports many cars, but make sure it works on yours before you buy.
http://www.dashhawk.com/support.html
Have the original box, mounts, cables, drivers, the Dashhawk, and the manual.
I bought it for 400 USD, but I no longer need it because my new car does not support it.
Selling for $100 OBO. It's gathering dust in my room.