With longtubs, exhaust gases are moved more freely since the runners don't combine until much later whereas with shorties the gasses combine almost immediately which makes it more of a restriction. Thats how I see it anyways. If I'm wrong, feel free to correct me.
__________________ 2001 True Blue Mustang V6:
MAC CAI, True Dual Flow 40's w/ MAC Long Tube Headers and turn downs right before the bumper, 15% tint, Eibach pro kit, Tokico HPs, Detroit Tru Trac, FRPP 3.73s, Diablo Predator w/ custom tuned by Mike, v3 vap windstar kit. Waiting to be installed: Steeda short throw shifter. |