I had a noticeable gain and large increase in sound in my 2007 3.0 sport but that was it. I did the airbox mod on my 4.0 with a stock filter, and noticed a difference with that.
However, i noticed zero difference from going from the airbox modded setup to a K&N, only a slight difference in sound..and all it is is a suckign sound lol
soooo IMO definately NOT worth the $300+ i paid for it.. just do the airbox mod with a K&N drop in filter and i bet you it would do the same as a ripoff intake.
DOUBLE LIFTED and PREKEYD, 17x9 Eagle Alloy 197's, 35x12.5 Hankook Dynapro's, black headlights, 3" flowmaster exhaust, UD Pulley, K&N, JBA Headers, Motive 4.56 gears, Superchips Flashpaq Performance tuned, FOX shocks, Pioneer sound and much more.