Selling a used unichip. Removed from a 2005 R53 AUTOMATIC. Intake.exhaust.17 percent pulley. I do not have any more details on this device as I have never installed or used one. Im certain that unichip could answer any questions. What you see is what I have. As far as I know this it all complete minus a toggle switch that can be purchased most anywhere . 200 obo According to this PDF I do have the complete kit here. http://www.unichip.us/system/uploads/assets/installation%20instructions/1620011.0%20Installation%20Instructions.pdf