What if you run Craig's and they are also down from your baseline?
Garrett
encrypted with an enigma machine
Just a heads up , did a before and after of steed speed manifolds, the truck went from 743 to 672 ... Huge loss and spoolup as well as back pressure got worse. They will be coming off immediately. Graph to follow when I get to a computer.
what diameter are the up pipes? I still have no clue why steed made the v band flange so damn big on these things.
I would literally LOL
Maybe Dozer will give you a set of his epic log style manifolds......