Not "hidden factory", HP Tuners just created a logic strategy you can add to the ECU that emulates a trans brake. Only available for 10R80 right now, I'm still waiting for the 6R80 logic.
Damn Youtubers and their click bait titles.
That car kind of sounds like ass, whats with each new 5.0 sounding worse then the previous
Believe me, if HP Tuners doesn't get around to releasing the strategy mod, I'll go the relay route. I just like the idea of being able to use my paddles to control it.