My brother bought this new and used it on his 2012 Cummins 6.7L. He has traded off the truck and the tuner is now for sale. From what I understand this will delete the EGR and DPF (provided you have deleted the hardware)as well as provide 4 different power levels to choose from. It will fit 2007.5-2012 Cummins, 2008-2010 Powerstroke 6.4L, 2011-2012 Powerstroke 6.7L and 2008-2014 6.6L Duramax. Power Levels wDPF w/0 DPF 1. Stock stock 2. 40HP 50HP 3. 80HP 90HP 4. 110HP 160HP He paid $1200 and would like to get $800 put of it. PM me for best results as I am not on everyday. Thanks!