Reviewed By Stuart B (COVINGTON, KY) Reviewed for a 2012 GMC Yukon XL —11/8/2017 8:33 AM
Definitely worth it! I researched CAI's for quite a while and figured I would see a slight improvement in gas mileage of up to 1 mpg. Pleasantly surprised to see just under 3 mpg improvement with the K&N 57 FIPK. Sounds no different than stock under normal load, but sounds like a million bucks when you get in the gas pedal. Kind of addicting. I drive with a fairly heavy foot on the pedal. Wish I would have put one on much sooner.