Pay for Torque! It's probably one of the best android apps I've ever purchased. It works as it should, reports exactly what you're pcm is seeing. Set up only the things you need to monitor as too many pid's can slow it down. Using an old phone dedicated for the purpose is a nice touch too, simple and cheap multi-gauge! It'll also clear trouble codes but be advised, that will reset drive cycle test so don't think you can clear codes and pass an inspection say... Anyways, I've used it for some time and even compared it to direct gauge reads and is spot on.
Good Luck!
