Moby
GOLD Star
So what's missing in the 8-speed with 35s? It's software. The transmission calibration is not ideal even with enough physical gearing. Using the ECT Power mode may help with feel. Jeeps have flash tunes available for their trannies when going bigger tires. Thinking out loud (crazy I know!), I wonder if messing with accelerometer/yaw sensor by physically shimming the leading edge or zero point calibrate it with vehicle nose down, so the vehicle thinks it's going uphill slightly might help with shift points? Not even sure this sensor feeds into the shift map but I suspect it might.
HPTuner's support of the 07-15 LC says "including transmission". I don't really know what this entails but I'm hoping when they crack 16+ they also include support for the 8 speed.