un plug the maf, then start the car, if it runs better the maf is bad. also check the wires to the maf for broken insulation, or missing insulation on the wires at the plug end.
those metal prob's in the maf should be kinda shinny looking.
is the check engine light on again? if so have it scanned again. the cel will come back on when you unplug the maf, so scan before you try the unplugged maf trick.