Reviewed By Alex V (VIROQUA, WI) Reviewed for a 2009 GMC Sierra —6/28/2016 5:18 AM
Easy to install, only took an hour. Noticed a huge difference in responsiveness. Increased my mileage by 2.6
Reviewed By Lyall I (Chandler, AZ) Reviewed for a 2016 GMC Yukon —6/22/2016 10:11 AM
The non-metallic cross over pipe is the way to go. I previously had an AFE system with a metal air pipe which heated the air too much causing the engine to bog down and hesitate under acceleration. Problem solved with the K&N system. The vehicle has achieved 26 mpg steady Hwy driving at 70 mph.