I'm selling this Unichip system that I just bought several weeks ago. I didn't realize that the harness for the ECU is different in the 09+ than the 05-08's, so this one won't work in my 2010. Never been installed in either my truck or the guy who sold it to me, everything brand new in the box. Comes with illustrated installation instructions and the cable to hook to your laptop also. $300 shipped, just looking to get my $$$ back. These retail for $595 on Unichip's website. This is not a "chip" like you get on eBay, these are fully customizable to your after-market mods.
Edit: Question was asked if this was fully plug and play, answer is YES! You unplug the harnesses from your ECU behind your glove box and plug them into the Unichip module, then plug the Unichip's harnesses back into the ECU, and done! It comes with great illustrated instructions on installation. When you're ready to remove it, just unplug everything and plug the harnesses back directly into the ECU and you're back to stock.