Did you buy the ProM calibrated for the SVT.. the 75mm bullet one or whatever.
If you did just tell him to use the stock svt transfer function and after you do some datalogging he can adjust it.
If you still want to get it flowed there's a company that took over Pro-M's MAF's and they can recal them and crap.. I think it's in lansing but I can't remember the name... I saw it in one of my mullet mags.