on a 98, you won't gain anything over a drop in. At most you'll get 7 hp with a CAI, you already get 5-6 with a K&N drop in.MylilPony said:
If you like the eye candy, get a CAI, but they won't do anything unless and until you get the intake ported.
you'll pick up a few mpg with either, but you'll lose mpg on cold days with a CAI.