Reviewed By Wesley J (American Fork, UT) Reviewed for a 2001 GMC Yukon XL —8/22/2016 12:38 PM
I was able to easily install this myself with the enclosed instructions. I've noticed a small whistle sound if I really put my foot into it but most of the time it doesn't make a sound. I purchased a kit that included a cold air scoop and we couldn't figure out how to install that even with the instructions it included. That part remains to be installed and even without it, I've noticed increased performance.