the cars are maf based..
im not sure how "blow through" friendly they are

on my setup i'll just be running a standalone with a MAP sensor, makes tuning easier.. not to mention MAF's are restrictive

as far as boosting the car, its not a problem... the main problem as stated is ecu tuning..
unfortunately our cars have returnless fuel systems.. they modulate fuel pressure voltage to control fuel pressure

you could get by with an SAFC hack... buts its just that, a hack.. it confuses the ecu by controlling the maf signal sent to ecu... adjust this too much in the wrong direction and it actually forces the ecu into the wrong portion of the map for a given rpm vs. airflow and can ultimately lead to internal engine damage

the real way is to modify the fuel system with a return and get an adjustable mallory or aeromotive (preferred by mean) 1:1 FPR.... notice i didnt say and FMU... those things have rediculous ratios and we've actually ahd cars damage injectors running pressures that they produce

you could use a piggyback (like a Haltech F10X, or a greddy emanage) which just take the stock values and chagne them to whatever you desire while leaving all of the stock ecu functions in place (a/c clutch, fan switch, etc)