Let me cut and paste this from my history of skitimes car thread. Now previously I shamefully was using the stock restrictive 2.8 air intake system and air cleaner. I decided to build a cold air intake box and intake system with a K&N filter. I have a one-piece 4-inch rubber hose running from the throttle body to the K&N filter. I am designing a cold air box behind the Mecham side scoop for some ram air effect. Most of the Fieros I have seen just stick a filter behind the quarter panel and let it suck hot air from the surrounds. Not good! I want a completely sealed compartment for the filter that will only take in cool air.
With the redesigning of the air intake system I was able to relocate two ugly items in my engine compartment. I relocated the emissions canister and the cruise control vacuum tank away from my rear engine compartment to being hidden where the old air cleaner was. It is much nicer looking without those ugly things being visible.
Well after driving my GT finally after completing the cold air intake and intercooler. It felt so much stronger. I drove it hard and it felt like it definitely has more power. The power was right there all the time. It reminded me of a tightly wound rubber band. After the spirited drive the intercooler was only warm and it would of been too hot to touch before. I was pleased with that. The new intake system really lets the whine of the supercharger come through. Sweet! I had the expected drop in boost but now it time to put the smaller pulleys on. hehe
Here is my cold air intake box. I made two panels out of steel to close the area. All seams were taped with metal duct tape as well as any factory openings. The original fender liner was cut in the middle so you only need to remove the front half to service. The liner is sealed with gaskets as well.
Here is the new large K&N air filter in place.