SleeperZ knows what he's talking about when it comes to performance.
With that said, my car idles and runs perfect with the air filter directly on the MAF.
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
CEG Dragon Run - October 13-15