I just got a exi 227 in the other day, gonna try it in a 2wd slash running dirt oval. Haven't hooked it up yet but figured for $15 it was worth a shot.
I did get one of those mini video cameras for $21 too. Tried it out yesterday inside my sc10, and I have to say it has to be the coolest $21 I have ever spent. Has pretty good video and is awesome being able to feel what its like actually looking through the windshield while running around.