depending on what you have done, between 6000 and 6500 is a good place to shift.
2K3 std zx3 zetec
MODS: svt header kit, RT 2.5" cat, FS flex, 2.5" trubendz Borla, FR wires, SCT chip, AEM short ram, spec stg 3, vf dogbone, h&r springs, brembo x-drilled and slotted rotors, hawk hp+ pads, oh and shes on a diet...
117hp 134tq - dynapack dyno www.synapsemotorsport.com
15.567 @ 86.51 Lebanon Valley Dragway