I know some of you use Innovate O2 sensors so I figured I would post this up. Innovate has release a $99 logger that captures the data on their MTX connections used between all their systems. Could make a low cost data logger when teamed with their LMA3 unit.
http://www.innovatemotorsports.com/products/pl1.php
http://www.innovatemotorsports.com/products/pl1.php