They could try and say the relocated MAF sensor may be causing the issue. What kind of intake are you using? If it is one that keeps the maf in the same spot such as Steed a, Fswerks, or k&n should not be having issues unless there's a leak before the maf sensor.
Dyno numbers: 177hp/163tq
Mods: Steeda Intake, STS Kit, Rear sway bar, Lowering springs, Steeda RMM, Magnaflow catback, SCT Tune
Moderator: Third Generation Ford Focus, DURATEC Ti-VCT GDI Performance Chat & Florida regional section