Tach can not change higher up there. It's not variable at the top. Even the dynamic redline can not go below 4500RPM wihout creating a whitespace at 8K
I have set my redline at 3000 rpm until the car is completely warm, thinking about adding red so it stays uniformly red from 3K to 8300 where the static red is.
Here is a video I took earlier today at the lowest stock level before the white begins to show:
Edit: going to take a quick video for you guys..