I have a couple of these. The app is free to download. Allows you to read and delete any code. It even looks up the code and give you a definition.
It also lets you read every parameter of the ecu as its running, log, save, and view as gauges.
I have used it on the wifes rx8 many times
http://pages.ebay.com/motors/link/?n...372933&alt=web