K&N Cold Air Intake Kit: Increase Acceleration & Towing Power, Guaranteed to Increase Horsepower up to 14HP: Compatible with 4.0L, V6, 2008-2019 Nissan (Frontier, Xterra, Pathfinder), 63-6014

Purchased 7 months ago. Relatively simple install. Upon starting I could immediately tell it was pulling air through the crack by your hood, where it was not before. Can for sure feel the power. Noticed I got up to speed a little quicker and acceleration felt SMOOTHER. Remember it is just 15 HP so it is not a huge improvement. The sound is honestly the best part. If my window is down I can hear it pulling air through the hood when accelerating. When you romp on it, it absolutely comes alive at 4000 rpm it's like a switch is thrown and you hear it working. It sounds like a demented leafblower! No joke , it is like this hollow whine that makes your hair stand up. Better if window is down though. Overall good product. To be honest, probably not worth the money, but not too much stuff is made for our trucks so we take what we can get and this is my hobby. Dyno tested at 230 hp to the ground with 3 inch lift and 32s. Believe the graph they give you. The gas mileage increase canceled out my lift and tires so about 2mpg in town. Was getting 16 now about 18 in town. If I took the lift and tires off I could probably get 20 with my bedcover down which is a great purchase as well (1-2mpg in town).

Installation took about 45minutes. Box contained everything it needed and the filter works great. I can already feel an increase in power in the lower end and the engine sounds great when you put the pedal down! K&N has always been my go to for CAIs and filters and I don't see that changing anytime soon.

I purchased this intake as soon as K&N verified it fit the 2012 Nissan Frontier 4.0 V6, I went with this (plastic model) because it claimed to make 3 more hp over the metal version, whether that is noticeable in a mid-size truck I cannot report. I can say the plastic version seems to be somewhat quieter overall until redline is reached versus the metal versions, I am basing this on past metal intakes I have had on different vehicles, so it is not a direct comparison, but a pretty good guess. There is a definite noticeable difference in overall power and acceleration after adding the intake. The problem is the intake sounds so good at engine redline it took no more than 10 minutes for me to get pulled over by a very understandable police officer for doing way more than the speed limit. As far as any increase in MPG it is slight, but noticeable if you can control your right foot. The instructions are quite good that came with the intake and make this install a quick one. In about a half hour to 45 minutes you'll be looking for you license, insurance and registration, hahaha.

I had to file the rectangular port where the MAF fits so it would face the right direction. It fits backwards but the truck won't run with the MAF in backwards. Once I filled the port a little it installed just fine and does what it's designed to do - make your truck louder.

The product is well built and easy to install but it did. It give it the jump or extra boost as anticipated. Also pushed the fuel consumption up.