2015 CC Laramie (3.92), DPF Delete, EGR Stage, MRTuning Stage 2, Timbren bump stops, Straight Pipe
Such a useless gear ratio IMO. 3.55 and 3.92 should be only options. 3.22 is for highway and no towing which defeats purpose of buying a diesel.That is over the limit for my 21 ED with the 3.21 rearend. I assume the higher ratios can handle more because some models top out over 10k.