I have a very nice Banks Ram Air CAI off my '09 JK. I traded the Jeep so I put the stock intake back on before taking it in. There are many that will tell you that CAI's are a waist but I have a different opinion. This intake will make your JK more drivable. It will not add huge horsepower or torque but it will make your vehicle not be constantly shifting down while pulling a long grade on the highway. This was something that I reconfirmed with the reinstallation of the stock system.
This system is yours for $100 delivered to the lower 48 state of the US. Send me a pm and we can work details.