Wow I knew there had to be other people with this idea in mind. I also want to add another reason for this maf-map convertor besides the low rpm stall. s14 SR, RB20 and RB25's do not have a d-jetro version of the powerfc. This means if you go with a top mount turbo with 4" inlet, you have to have a super tacky looking 4"-3" adapter to hook up the maf in front of the turbo. This absolutely kills the look of nice top mounted turbo.
Another Idea I had was to make a maf sensor and flange that can be installed in the ic piping. Essentially making it a blow-thru maf setup rather than a draw-thru. If nissan freakin made the maf sensor removable from the housing like other manufacturers this would be a very realistic idea.
-Bluefire