I finally (after 4-5 years of wanting one) got a "carputer" installed on the evo.
http://www.thedoughtcom.com/images/carputer.jpg
I'm in the middle of writing my own data logging software and want to style it after the Skyline interface, where it has TPS, speed, RPM, etc in virtual gauges. Later on I'll add music, video and GPS capabilities but for now I'm just happy the install went well.
Peace
-Shawn