Swgunn, the technology (Multi-EGR) being used in 2020, was abandoned, By all other Dsl Power Plant MFGs, 2009-12 , I worked at CAT under contract, it was being Tested in the lab Here in their Global Road Paving Facility.
I have sources deep in engine development and MFG. I publicly declared back in 2015, that the 3.0 spec of MS110006 was incorrect, That it will fail CAA laws, its QC at cento is a major Problem and a big factor in Engine Puking,( I also stated that 250 Engines Per-Month were failing 2015-17 about 10 months at that level and 14-16 months 150) the EGR was poorly designed and will cause problems, the Engine is a soot producer and will require major service in DD Use. The Only thing I missed was the fires.
Mods and owners at 1500diesel.com claimed I was mad, and banned Me. Four years later the facts are in the 3.0VM world its the blind leading the blind.
I also supported the 1/2 Dsl at its release in 2014.
Asking small Dplc Dsl to produce the HP/TQ to push/tow 6000LBS+ requires boosting Cylinder pressure, this increases Cylinder compression that creates High flame temps that produce High Levels of NOx, SCR systems can only get so much of the NOx reduced, so EGR is required Internal or external, the 2004.5-07 5.9 Cummins has internal EGR the process is in the Tuning and cam.
Soon the On-road Dsl Power plants will have New SCR/NON-External EGR and New turbos and intake/plenums.
The 2020 VM3.0 is more hardware in an already over engineered under developed Power plant= same problems with just more cost $$$$.