Scott...I 1st put 12 1/2" holes in the bottom of my filter housing, near the base (where you can actually see the ground thru the car). The car seemed to like that. I then installed a drop-in AFE filter, and the car realy liked that. I then cut the housing right above the clips, and honestly didn't feel a thing different. Now this was during our high 80F days and high humidity to boot...so I (gasp) duct taped the housing back together and used the fenderwall cold air intake. Now having said that...come cooler days, I'm untaping the housing. In my humble opinion, though...the exhaust is the main culprit in choking the engine. No matter how much cfm you suck in, its not getting out fast enough. I would recommend a Sho-shop Y-pipe 1st...gutted pre-cats (if you can't afford headers) then free up the cat back. Then...the intake will make a lot bigger difference. Just my $.02