You launched in manual, bounced off rev limiter, and then the car went into neutral??? Is that what happened? That never happened to me before on a launch, but once I just floored it in manual from a standstill. I thought the transmission switch was in the normal mode, not R or save, so I expected the car to shift itself at redline. But because the car was in R mode, it bounced off the rev limiter for just a second and I shifted pretty quickly. But it didn't go into neutral. I'm surprised it went into neutral for you if what I questioned in the first sentence is what happened.
This happened to me the first time I launched after having dealer set my cc to +2. Launched prob 40 times before that and maybe 15 after with no issue. I don't think it popped out of first, it felt like it released clutches. Prob due to a TQ threshold being exceeded
Mine did this once. I think it is because this is the first automatic performance car I have ever owned. I am 6'6 and rest my hand on the shifter and when it hit the limiter, it shifted my weight forward and I bumped it into neutral.
I told my girl that I am good at diving standards, just need to learn how to drive an auto.