yes the safc works well with MAP 4age ecu. Run 365 or 440s, use gze or hack on a volvo or similiar 1:1 oe boost regulator and use a safc to tune it. Works well for a t25, t28 or t3 up to ~8psi (varies with fuel quality). You will need a msd btm, apexi itc or some other piggyback timing control, should you want to push it further on pump gas.
Perfectpower.com has another low cost piggyback that adjust fuel AND timing, called SMT6... same price as a safc. Needs laptop. Better imo.
I don't know of anybody using a safc with the bluetop MAF ecu, due to its wierd voltage... not the typical 0-5v signal the safc uses.
I understand safc works fine with the gze ecu, MAP or MAF. The 'boost friendly' ignition map will allow you to run more boost.