Corrected me if I am wrong, there are 1 or 2 left over wires in the 1g. I think I will have to go look at how I hocked mine up. It has been a while seance i have touched it. Do you mind snapping a few pics of the wire harness on the MAF-t perhaps i can go line up witch wires go were for you. If I am not mistaken the factory boost regulator is another connection in the same bunch of wires going to the factory MAF ?
and you are using this MAF-t with DSM link V2 ?
might be less work to get V3 and buy there new groovy GM MAF cord that they are selling for 70 $ or something like that !

Pictures tell a 1000 words If I can see it I would have a better idea of what is going on.