I heard that if you get a K&N replacement filter you can cut the face off the box so that the whole filter is open to air you get HP gains. Is this true. A good friend of mine made a good point when he said that it wouldn't be taking cold air from under the car but the hot air from inside the engine compartment. And, how does a cold air kit work on 94's because the cone is setting right where the old box is and not under the car like in 97's! Thanks for your help guys!

 

The airbox is not the bottleneck. The restriction is in the tube between the MAF and the airbox. Cutting open the airbox and installing a K&N will not provide a noticable improvement, But it will make the engine louder! (I did this on my car)

Someday I'll get the Ultra-Z ramair hood, and that will eliminate that restrictive duct.... Until then it stays stock on my car.

 

if thats all you can do on your 94 then go for it. It theoretically shouldnt be as effective as a true CAI, but anything is better than stock -- look into fabbing up your own.