If you look at my thread a few down below yours, you will see I indicated this same problem. It is launch control, and ecutek is already trying to figure it out. My tuner had to remove LC from all maps until Ecutek can figure it out.
It acts like a 4.5k rev limit when you do not engage launch control. I explain it clearly and more descriptive on my first post in my thread.
It doesnt happen every time too
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