Reviewed By Michael B (Spotsylvania, VA) Reviewed for a 2007 GMC Yukon XL —12/29/2014 8:27 PM
Would have rated 5stars But the mileage decreased Love the sound and extended HP and torque NICE!! Thx again auto anything On time !!!
Reviewed By darryl g (PHENIX CITY, AL) Reviewed for a 2005 GMC Yukon XL —10/2/2013 7:00 PM
I felt the difference the moment I pulled out the drive way. I drive a 2005 denali and the power difference is awesome and my fuel has gone up 2 mpg in traffic and highway. I only wish I would of purchased years ago. It took only 53 minutes to install and went on perfectly.