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You can scale the MAF by half and get double the flow out of it, up to 1024g/sec instead of the default 512g/sec. It is an involved process, and dont ask me how because I dont know
I ran a MAF with my Procharger at 10 lbs but Rick @ Synergy had me switch to a 2-Bar and SD when I put the turbos on. The SD tune works great year round here in Nor Cal.
I look at the MAF like a failsafe for blow through forced induction. Once you obtain a reasonable amount of boost it conveniently separates to prevent engine damage.