i went with the revup airbox, k&n drop-in and z tube.. Not much louder than stock only really when your over 3.5k rpm it growls nicely.. i recommend you get the spacer too sound and power gains are worth every penny

 

Maybe one of these days the Mods will compile a thread regarding the various types of intake setups, the positives and negatives of each, pricing, etc. and then make it a sticky. Then maybe we could get past these intake threads that pop up every 3 days.

 

I have a AEM cold air intake and it is awesome

 

I have an Injen CAI I love it and sounds awesome, highly recommended.