Reviewed By rick t (WILMINGTON, NC) Reviewed for a 2002 GMC Sierra —12/6/2014 5:01 AM
They worked and sound great pick up my 1/8 mile speed 1 mile per hour to 84 mph not bad for a 5900lb truck ! Gain about 20 hp just changing to JBA headers.
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.
Reviewed By Josh H (Jonesboro, AR) Reviewed for a 2002 GMC Yukon —6/27/2010 12:20 PM
If it wont kill you to dish out the money i would recommend these headers. I gained a consistent 2 mpg better, accelleration seemed to be smoothed out, definatly winds through the rpms quicker now, didnt lug at lower rpms like it used too. Didnt make exhaust very much louder at all that i noticed as i already had a custom cat back exhaust...just changed the exhaust note, a little more aggressive...seems that you can hear individual cylinders firing....i feel more low end torque for sure......I LOVE THESE HEADERS!!