Looks like someone finally got it right - Brad and the guys at River City Diesel have figured out the transmission code. The SCT Livewire never had an issue with horsepower and torque on the 6.4's. Everyone complained that the transmission tuning was mushy. Well, according to Jesse at MBRP, he's tried all three of RCD's new SCT tunes and they're great. Here's a link to their site:
River City Diesel Powerstroke Performance
