get an apexi pod for about $150, you'll just have to ge the right one to bolt to the z32 afm, heaps better than k&n, and those foam ones are crap (hks etc) they call em rockcatchers for a reason

check this out: http://www.mkiv.com/techarticles/filters_test/2/

Dry panel filter?

How about the Oem STI panel filter? around $45 from memory.

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

Don`t oil the K&N "."....they only filter seagulls and larger birds like crows anyway so leaving the oil out won`t affect its filtration performance much

On road in perth you don`t see much fine dust anyway(not enough to worry)...

Apexi dry "power filter"(panel type std airbox fitment) is the way to go if you want somthing good ...factory filters are good enough for sub 300hp performance as well.

There probably wouldn't be much of a gain over the stock WRX filter, would there?

Supposed to be higher flow + they have stainless mesh for better support.

And the STI logo!

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

sti logo, haha you cant see it - its in a stupid box..

factory airfilters can supply enough airflow for 300hp+ easy as Leggy said

for only around 15$ - change once every full moon

OEM filter for $15? STi filter for $45?? Yeah maybe in the 80s...I think each of those cost a lot more than that!

pretty sure i can get a OEM filter for around 15$, a decent one also

i replaced my stock wrx one today from Vision R, got a Apexi Power Intake Dry Panel Filter from there for $99 thanx for the information, my stock one was dirty as, and never been cleaned even when taken to subi for service

alot of places that services cars dont replace air filters. i no like 2 in every 10 ultratune's will replace them. Pretty sure you have to ask