I have always been skeptical of cold air intakes, but I noticed some lag coming from my 16' 4-door wrangler rubicon after a 2.5 inch lift and 33 inch tires. I did the flash cal to calibrate my transmission shift points and that helped a little, but I honestly thought that something might be up withMy transmission because of the slow start coming from 0 and into the 2nd gear of the automatic transmission. This intake added a great noise and Eliminated the lag that I was experiencing in low speeds.The butt Dyno approves. I don't think it has made the Jeep any faster, but it feels much easier to take off from a stop.As for installation, this thing was a freaking peace of cake. A child could install this with a screw driver and a crescent wrench. Took me about 45 minutes start to finish (unpackage, find tools, take out OEM, and install new one).I am a little nervous about one aspect of this intake and that is the open air box. I did 35k on my wrangler and the stock intake box and filter was clean. The open design of the new box does not look like it will protect as well from dust and mud while off roading. Just something to consider, luckily for me it is just a few times a year.