Yet another…
Subaru 3″ STI blow through MAF.

I modified a Perrin front mount intercooler kit to accommodate a 3″ blow through MAFS to have more resolution for tuning higher horsepower levels.
Perrin has a 3 inch MAF option, but it does not work very well because the 3″ section is not very big and causes turbulence.
Anyway, to the pictures…
If your wondering what the little square is, it is a patch where the old pipe was rubbing through. hahah








