I finally tried the old trick of disconnecting the MAF and seeing if the engine ran better without it. Sure enough, it did.

I should have done this with the oxygen sensors before buying new ones... though those might have been worth replacing anyway. Even if still working adequately, I know they weren't good as new.

96 GL Zetec ATX, white with pinstripe, nickname " Sam Smooth "
mods so far: CTA intake with homemade heat shield, KVR drilled front rotors & carbon pads w/ 500° fluid
planned mods: exhaust (want to keep it quiet), e-ram (awaiting installation), diablo chip
involuntary mods: compression increased after head gasket failure