1992maximase30

Hello. I have a 1999 i30t auto.So I've completed the 00vi swap.With a tune.She runs good for the most part, power improvement is very noticeable.*Currently the problem I'm having is I get a p0100.A code pertained to the mass air flow sensor being an issue.My original one she would hesistate throughout high rpms.Then I got another one through the junk yard that one perform okay but still had the code.I replaced It again.*I even checked the harness the sensor is getting power, has good ground, and giving the correct signal.I really hope its not because I'm cali spec and have the tune wired in.I have emmisions coming up and need to pass...Anyone have any advice plesse__________________