K&N has designed a performance air intake system for the 2007 GMC Yukon and Sierra, 2007 Chevrolet (Chevy) Tahoe, Suburban and Avalanche and the 2007 Cadillac Escalade. K&N dynamometer tests show a 17.54 horsepower gain with use of this K&N air intake modification. K&N tests multiple vehicles for each air intake kit it makes to ensure a consistent horsepower and torque gain. This video demonstrates the steps needed to install a power gaining K&N air intake into select GMC Yukon and Sierra, Chevrolet (Chevy) Tahoe, Suburban and Avalanche and the Cadillac Escalade. http://www.knfilters.com/search/product.aspx?Prod=57-3058