How do the heaters in the O2 sensors get power? One blown fuse could throw everything off.
A misfire is going to pass unburned gas to the cats - which leads to very unhappy O2 sensors.
2001 Silver Bullitt v6 5spd
Go: Windstar intake w/ 65mm TB (!), BWD coil pack, Autolite double-platinum plugs, MSD 8.5mm wires, BWD DPFE, BWD IAC, Monroe Sensa-Trac gas shocks
Show: ACC Carpet, 2007 Anthracite Bullit rims 17"x8" w/ 235/55/ZR17 Riken Raptor tires, clear headlights, Ford Racing Bullit fuel door (!), Home Depot front lip
Whoa: Ceramic pads, front calipers, master cylinder
2003 Silver Lincoln LS V8: Perfect just the way it is!
2001 Harley Sportster: Black, because it's faster