I bought this tuner for my 05. I usually ran in Stage II & used it to check on DTC's to ensure my dealer came up w/the same codes (if any). Worked great, but I traded off my truck for an 07. Easy to use - install & uninstall in minutes. This model will not work on my 07, so I want to sell this one so I can purchase another one for my 07. Will sell for $225. call 540-847-8275 I am located in Fredericksburg, VA.