I have a 2500 ram 2010 cummins 6.7 p codes have 0191, p2196, p046c, p2453, and p049d. the truck is not wise cast any alteration exept install your system bully dog. I'm having problems when I accelerated because the turbo takes to turn occasionally. take the bus to the dealer and one of the things I said was that I had to change the EGR system and put it back. youtube recommend eliminate the system and put the H & S mini ultra maxx or raceme. I would like to know your opinion on this issue