Reviewed By Annie T (ALEXANDRIA, VA) Reviewed for a 2011 Nissan Frontier —9/16/2015 10:20 PM
Noticable performance increase in my truck.
Reviewed By Oren S (SEATTLE, WA) Reviewed for a 2011 Nissan Frontier —9/15/2015 8:32 PM
After weeks of researching all the different CAI for my 2011 Nissan Frontier, I found the 57 to be the best in terms of value, ease of installation, performance boost and sound. I wasn't expecting a huge difference in performance, as my research made it clear that CAI are a minor performance enhancer, but I can certainly tell there is some difference in horsepower, especially when towing my pop-up tent trailer. I also like that K&N actually provides metrics for performance gain.
Reviewed By Ron H (BEL AIR, MD) Reviewed for a 2011 Nissan Frontier —9/13/2014 6:49 AM
Fairly easy to install in my 11 Nissan Frontier Pro-4X, except you need to loosen things up and twist the filter into place before tightening down as the directions state. Feels like a bit more horsepower and the sound is nice. The directions state to disconnect the black battery terminal. I did this to be on the safe side, but it resets your mileage computer so it is hard to assess any change in mpg's. I'm happy with it and hope it helps offset the mpg reduction of the larger tires I installed.