Doing a mild tune for a friend, Its the only 6.7 I've done, however I've done a couple 5.9s and duramax's and don't recall seeing these results. Can someone take a look at the log and tune for me to make sure I'm not doing something stupid with Commanded Rail Pressure? Truck has 150k mi on it. We kind of suspect the lift pump is weak...
Log_0009.efi
CMC_0007.ctz