Originally posted by SVT_CT:
filter is RU-3570, calculated CFM=524


TOO SMALL! BTW it's around 495cfm effective area! (have to minus out ~1/4" from both sides for non-flow area)

That's smaller than a KKM (~540cfm) and the KKM is already known for dropping high rpm power.

Also it uses only a 3" O.D. flange!!! (figure ~70-71mm I.D) Again too small! The other MAF adapters for the Duratec are 3.5". (KKM, BAT, etc)

This is probably not even as larger as the stock MAF opening. (IIRC it's 72mm tapered to 70mm)
Definitely not as large as an aftermarket MAF's inlet or outlet!!!

This is definitely a SKIP IT!!!

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.