mckenzies 2008 gmc.hptAttached is a file of my current tune. Work I have done to the truck includes non DOD cam, non DOD lifters and all associated gaskets and o rings. The problem is even after I have disabled the DOD and did no report on the cylinder codes including unchecking the ses box's it still runs on 4 cylinders. It sounds like for a split second when it first starts it is running on all 8 but almost instantly switches to 4. Any ideas what I am missing?mckenzies 2008 gmc.hpt