lol?
Afterburner WORK from outside view! Work in sky and on ground… I’m take off with acceleration to 80%, when push Afterburner button and accelerating further to 100% with additional sound effect and visualization. Everything is the same in the sky. You can also hear sonic boom when passing the speed of approximately 530-580 kts from outside view.
if something doesn’t work for you the way I wrote, then you have a mistake or install issue somewhere.