going back to the stock box IMO is not the way to go. everyone feels a little too religious for or against cold air intakes. The fact is they do work, thats the end of it. Sure, you don't reep the real benefits of it until like 4500 rpms as far as power goes, but if u look at the charts more air is consistently being flowed in then the stock set up, and the HP/TQ is consistently higher then stock through the curves. Its not taken your money its doing what it says its going to: more air gets in, the snorkel is less restrictive since it is smooth and has a larger diameter, the filter is re-usable, and more MPG is achieved if you don't drive it like you need the power.
this is off K&N's web site:
Mechanical testing performed at one of our testing facilities supports all horsepower and torque claims advertised by K&N. Horsepower and torque claims are based on testing of an actual vehicle on a dynamometer before and after a K&N product has been installed."
now this is for a cherokee but you can still get the idea:
the other part of it is not running a **** air filter, throw a K&N or Amsoil cone filter on the end and your good, i've never had any experience with AEM so i don't know. A buddy of mine has one and says he likes it so.
I hate those POS ricers just as much as anyone but I'm not gonna run my stock air box just because i don't wanna have the same idea behind my intake as they do.
Hope that helps
and just to add i was in tech school, and for a end of the year project i experimented with cold air intakes, tested their flowing abilities and the affects they had on various vehicles. Fratis, not everyones trying to jerk your chain around, i'm telling you these work.