I wanted to post this as sort of a response to all the negativity being brought to DRD's front door. First off this is not a review on how my truck drives and the tunes and what not, more an overall experience with the products and vendor. I installed all my stuff back in July '18.
I had a 12v before buying my '13 so tuning electronically was new to me. Before I purchased my tuner I did diligent research as most do I assume. MM3 seemed the obvious choice as a one and done device, and after the plethora of informational YouTube videos, and FAQ's and answers from DRD, another obvious choice.
Everything installed, trans relearned, maybe 1,000 miles and I really am very satisfied. Everything that changed with my truck after Ray's tunes were precisely as he explained in his videos. No surprises at all.
I do think the trans tuning leaves some to be desired but in a way that makes me want to beef up the transmission. I felt very informed and was not surprised or dissatisfied with the shift flare as it feels as if the tune protects the "almighty 68RFE" from itself.
Bottom line I am a very satisfied customer. I actually like the idea of a service ticket over endless calls and emails. My experience with DRD has left me feeling very valued as a customer and worry free about my Cummins.