had a chance to check the frequency tonight and the new maf ref wire is 2.5VDC but only 104Hz at idle. (should be from 1200Hz to 2000Hz at idle) even by revving the engine a bit from idle the freq jumped to about 400Hz. i guess it's possible the "new" maf is bad too?
that would explain why i had 130 trouble free miles with no symptoms and no p0102 rearing it's ugly head. i'm going to the store to exchange the maf tomorrow.