07-17-2017, 09:27 PM
unless i am missing something, reprogramming the ddec and or tranny should not change the actual rpms that you are running in 6th gear at a certain speed. it could potentially change the shift points, but not the gearing.
tom
tom
2002 45'8" Newell Coach 608 Series 60 DDEC4/Allison World 6 Speed HD4000MH