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Yes, get the AFE cold air intake if you are going to get one. The filter is much better especially if you buy the proguard 7. The AFE doesn't seem to have the MAF sensor fails that the K&N does. I had a K&N drop in filter and you could see daylight through it. The AFE one I can't (I have the proguard 7). Of course you can save yourself money, make swiss cheese out of the stock airbox and put a AFE proguard 7 drop-in filter. The only noticeable difference that I have noticed is just louder turbo whistle.
 
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