mine [yukon]
V is still shuddering under light load, doing logs i noticed its getting a few misfires like 3 or 4, but not sure if gen 5 also unlocks converter when misfire detected...but because this thing is pretty much always locked it just allows slip. when the misfire happens it completely unlocks and thats what im feeling?
dunno, i have zero clue what plugs are in it? stock i think are heat range 5 (LTR5) seems like not a good plug for boosted application. i've got some heat range 7s, same plug essentially just colder, seems to be the goto for lt4 with mods
starting real soon