K&N Cold Air Intake Kit: High Performance, Guaranteed to Increase Horsepower: 50-State Legal: 2005-2010 Jeep (Commander, Grand Cherokee, Grand Cherokee III) 5.7L V8,57-1549 2005 Jeep Grand Cherokee

I have been utilizing K and N filters and air intake systems now for 15 years and I tell everyone to use them without hesitation. The K and N is simply an excellent product without a doubt. When I purchase a vehicle the first upgrade I purchase is a K and N filter or an intake. My 2007 Jeep Grand Cherokee with the Hemi already runs good - with the K and N intake it runs great-smooth-sounds nice-good mileage. Works in conjunction with my other upgrades to give me a real world 24.3 mpg on the interstate and 15.5 or better in town.

I definitely recommend this product. Noticeable increase in torque at all RPMs. My 2006 5.7L Grand Cherokee even seems to shift smoother when accelerating normally from a stop. Maximum power accelerations produce an impressive deep throated sound in addition to the increased power. I am hoping to see an increase in gas mileage, but have not driven my vehicle enough with the new K&N Cold Air Intake installed to make a determination. Any increase will be just icing on the cake. Installation took me about an hour and a half and was not difficult. I recommend reading the instructions completely before starting the installation. That way, you can ensure you are using the correct nuts, bolts and washers as you proceed through the installation. I'm a fully satisfied customer. Thanks for a great product, K&N.