I don't know but they sure seemed to have a slow tree.That thing would take forever sometimes to drop the lights after both cars staged.I think one of the guys in the tower was a ford guy.My elimination run was a joke,car started pushing through the lights because the "pro tree" was taking forever to drop.I backed out of the gas and the car died.I had to watch my opponent run to a 12.24 on nitrous as I started the car then just gassed it and still ran an 11.99.I was furious.You guys can gloat I will just sit back.What an embarrassment.