my friend has a 92 bird, 3.1 and auto, and that airbox is like breathing through a straw, what can be done to improve this cheaply and what are other good mods to the 3.1 that are inexpensive?

 

Do a search for CAI's

 

i have a 90 firebird 3.1 and if your airbox is that small round canister with that tube on the side that has about a 2inch diamiter hole then what i did was take the canister out the drill out the rivits then take the hose off then goto your local hardware store and get a pvc elbow that will fit over the out side
hole and use a file or a dremal tool the shape the elbow to match the roundness of the can the use some appoxy glue and glue the elbow on it it will give you a 4 inch diamiter hole instead of the small 2 inch

 

Or just go with the TPI style intake that goes over the radiator...

 

talk about bringing back from the dead. Look at the date of the orginal post

 

wow, this is old, he doesnt even have his bird anymore, somebody backed up into it at a deaalership parking lot and he had to get rid of it, now he has a 96 bonneville (which is sadly significantly quicker than his bird was)

 

I'm pretty positive I read somewhere that this won't fit in a firebird.

If you like the RAM Air Hoods, and have that kind of money, you could go with a RAM air setup like Redraif has, but tha'ts pretty expensive setup just for a different air box.

The canister the previous poster was talking about is your charcoal canister and has to do with removing fuel vapors. I wouldn't remove that if I were you, in fact, I'd replace it, or if you have an older car I think you can get a replacement filter for it, pm TomP for more.

If you really want a CAI, pay the $50-100 to relocate your battery, and put your CAI on that side. It should help a bit with weight distribution as well, although not a ton.

Mathius