Originally Posted by CdnoilRAM
Don't bother with a CAI, the stock box is already a CAI, just get a higher flow drop-in filter and you'll be pulling more than enough air to feed your diesel.
Partly I agree, don't bother with the CAI kits or the K&N drop in filters. Stick the with OEM filter as it flows plenty of air and serves it's purpose (oiled filters such as K&N are more trouble than they are worth.) If you are thinking that you are going to make over 500whp then you should start looking.. at aftermarket setups..
The stock set-up is capable of supporting 500hp easily