I don't mean to play devil's advocate but here is a dyno graph of our 2 1/2" "smooth" crush bent system versus a resonatorless stock SVT exhaust system. This was the before and after runs with our SVT, when owned by a previous customer. The only changes between these runs was the exhaust system.
....and here is our SE, before and after the install of our non mandrel bent custom exhaust. Please note the maximum torque is a bit deceiving because the operator, on run 12, started the run at a higher rpm, which missed out on the max torque which occured at a lower rpm than the start point.
