okay lets think, ur getting misfire.. uve changed your leads and plugs, coil pack, checked for vac leaks..
now the other things u havent done is, clean your MAF and change your pre-cat O2 sensor. im betting on one of the two to be whats causing your problems!! so gogo! at the moment, thats all i can think off that can be causing your engine problems.. let me know whats happening!
