Reviewed By Bill B (New Hartford, NY) Reviewed for a 2015 GMC Sierra —11/17/2016 3:59 AM
These just added the snap I was looking for from the accelerator you can here and feel the difference in the motor. I partnered this with a K&N 77 series intake and Borla touring exhaust and it brought the 6.2 alive. Better power great sound and picked up 1.5 mpg.
Reviewed By Alonso G (KEYES, CA) Reviewed for a 2000 GMC Sierra —8/21/2015 8:14 PM
I got the stainless ones great price, first thing I noticed when I first turned on my truck with the headers on was the throttle response and also mpg gain and when they started breaking in the hp and torque gains started coming in and I noticed the gains as well very satisfied.
Reviewed By Nathan T (Brookings, SD) Reviewed for a 2008 GMC C/K 1500 —2/22/2012 10:13 AM
These headers were purchased to help my little half ton, as I pull an enclosed trailer with four or five of my motorcycles on vacations. They have given my truck a noticeable gain in power, accompanied by a vararam ram air, and banks monster exhaust. What amazes me is the increased mileage. I burn e85, and in town stock my truck was averaging 8.6 miles per gallon, it now is averaging 12.8! Two miles per gallon better at interstate speeds! It will make your truck noticeably louder, and in four cylinder mode it sounds, well, like it's missing on four cylinders. Lol the positives well outweigh the negatives.
