Well yes and no...the CAI mounts a filter in the wheel well with out the restriction of the stock air box's non 360 degree filter/air intake (filter square and sealed in half)..also your PVC valve cover is pumping oil into you air box and into the engine..yes a catch can will elim. this. My CAI is ALOT larger by about 2 inches in diam. and runs where you battery is soo straight flow few bends..the stocker bends like 4 times and is pressed up against the engine only making the charge air hotter...check
www.modernperformance.com and see the dyno diff. between stock and ICEMAN CAI and you see over +13HP AND 12 torque so this is no doubt the stock air box is restrictive and harmful to the motors longeveity with the oil recycleing action it performs. Also with a correctly modded engine the car controls no boost or timing no matter what temp..such as my ride the car controls none of my fuel, boost, pull timing function so CAI is VERY important in this case. I use no stock turbo selinodes! I can help any SRT4 owner to make huge power with min. money if you guys want help..listen to some imput..or have me come to your house to help you with a build up free..let me know..We can all learn from each other. Just my

BTW the myth of the CAI sucking in water you would have to drive through a 2 foot deep puddle and then in that case your stocker would pull in water cause it' "ram air" tunnle is in the wheel well as well. So if your not 4 wheeling it don't worry.