258mm, triple disc, foot brake to ~3000. That should give me some room to play with the launch control.
It’s a MPH vs RPM issue if I’m right. When I had the issue I’d have it set for (this is just an example) it to lock up at 72 mph and 4500 rpm. For it to lock both of those conditions have to be met. So what would happen would be both of the conditions would be met, it would lock the converter and then it would yank the RPM down which would trigger it to unlock because both conditions were now not met.
To fix the issue I had to turn the RPMs down low and use just the MPH to lock the converter.