SR maf not gonna swap straight on. Has to be rewired and you need either a tune or a piggyback to tell the ecu what maf it has. If ur gonna do all that you may as well get a z32 maf. way bigger and has the best voltage resolution of all the nissan mafs. But i dont think its a bad maf. Listen to Jason, you've got an underlying issue. Boost cut at 7 psi is silly.