Didn't want to have to post this, but oh well !!!
At the current time there is nothing I can do to fix what is going on, when you delete completely the Intake Heater, Intake Air Valve, EGR system, DPF system and go in and shut down the DTC CODES for the eliminated components there is really nothing else I or anyone else can do.
And to all the "tuners" out there, I do know how to manipulate the timed tables and set up the EGR/DPF when it gets eliminated.
In my opinion the LMM trucks are totally hit or miss, what I have found in common is anything other than a stock VVT will cause major headaches on some trucks.
It seems that the Cheetah and VVT/4094 chargers cause a major headache and since other "well known tuners" have attempted to fix these undelying issues as well with no success. So before I got involved with several of these LMM trucks the post history proves these problems have existed long before I got involved especially with TANK222's truck.
I also have tuned more than my share of LMM's with Cheetah's and they have been pretty much trouble free, but are all pre 2008/LMM's. To the poster with the 07.5/LMM there is your answer, the earlier OS's didn't have these issues, as do the 2008's for the most part.
NOTE: EFI-Live is aware of these issues and Ross and I are have been and are working on a fix for the last 3 weeks, until I can gather the rest of the information needed for Ross there is nothing that can be done to address what these trucks are doing, so everyone will have to sit tight and wait for Ross and I to diagnose/test/hopefully fix this.
Just so everyone knows, OS swaps have been attempted, all codes turned back on in an attempt to isolate the underlying issues and then shut off one by one in an attempt to diagnoses the problems with these trucks.
Many problems were present long before I got involved with the exception of Johnny770 who's truck ran perfect before deleting all the emissions parts and swapping to this Cheetah/twins.
I am not blaming the Cheetah, nor am I making up excuses, but I have tuned hundreds if not over 1,000 trucks, and very rarely do I ever have trouble with them running correctly, and Harbin_22 is running my tuning as well as a bunch of other LMM's here on the board, you just don't know it.
So before anyone attempts to blow up Ross's inbox don't waste your time........when we get an answer and a fix it will be rolled out to everyone, but for now please be patient and if you have a 2007.5 or 2008 consider yourself lucky to have a code free LMM.