Originally Posted by Injuneer

Again... the code it for the MAF sensor putting out a steady, unchanging reading. There's no way that problem is cause by the "tune". Either the MAF sensor is faulty, or the wiring harness, including the +12V supply on the pink wire, the ground on the black/white wire or the signal carrying yellow wire are not providing the required electrical functions.

It is a very common problem on the 97 models for the pink wire to be broken, perhaps because of the way the wiring harness is routed. The same problem is seen occasionally on 96 models, and seldom on the 94/95's. Or it may be a problem with a bent pin, for those who haven't changed the pigtail. Apparenly in this case its intermittent, so you might have to try jiggling the harness while testing the wires.

Its very easy to check the pink and black/white wires with a voltmeter, and the yellow wire with a frequency meter.