The bigger MAF and bigger injectors mess up your timing tables, giving you MORE timing. Something you don't want under boost.

Don't put your stock injectors back on just your stock MAF. I don't think the AFC can compensate for a bigger MAF and you don't know exactly how the bigger MAF affects the voltage signal either. Use the SAFC or your fuel pressure regulator to get the injectors to give you the proper fuel. That still won't be perfect, but it will be better than having both a bigger MAF and injectors.

2000 Rio Red I4 Cougar 200whp & 210wtq at 9psi 254whp & 276wtq with NX 35shot WRX TD04 Turbo, Cut Short Shifter, Strut Tower Bar, 17" ZN Wheels, Roush Springs, Starion Intercooler, NX 35 shot, HKS SS BOV, Full 3" exhaust,StreetFlight Chip