Follow clint's link to that thread, and go down to his post with the diagram and find MAF.
Can you post or email a scan?
(with O2's, long and short term fuel trims (ltft & stft), injector pulse width, and the rpm stuff.. more the better)
The MAF idea sounds good. I would also think of fuel pump resistor or the pump itself.
$12 O2 sensor ?!?!!