Originally Posted by TiStick
That ID is already the chokepoint in the air tract leading to the throttle plate. IMHO, you don't want to put anything in there that will reduce that ID. A solution to this particular problem is the bracket that Mike(Shade-010) made, which keeps the filter bottomed out on whatever housing it is sitting on. Or, attach(superglue) a thin band of rubber to the outside of the OD, which would give the filter hose clamp something a bit softer to grip, while also increasing the OD just enough to make it tighter to the filter ID.
I really want one of Steeda's aluminum MAF's, but I want to adapt it to my closed airbox also. Someday....
I didn't make the bracket, can't remember who did
2012 Ford Focus SE Sport-5 speed-203A package
Basline 1 -155.48hp 145.80 tq 93 oct. Lunchbox delete & K-N Drop in filter.
Dyno 2 -161.86 hp 151.6 tq - 93 oct. RDC 2.5" Catback & K-N Drop in filter.