Actually, they’re Mickey Thompson Drag Radials.

ether thats the worst sounding ls engine I’ve ever heard or....ohh wait there it is. rx7 in the background lol

bump box. allows the turbos to remain at full boost and still be on the trans brake. it opens the trans brake up for milliseconds to get the car to “bump” into the lights. any good turbo car that is competitive has one. the term bump box is a trademark by the way, but everyone just calls them bump boxes.